CN110396627A - A kind of rare earth aluminum alloy wire and preparation method thereof for 3D printing - Google Patents

A kind of rare earth aluminum alloy wire and preparation method thereof for 3D printing Download PDF

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Publication number
CN110396627A
CN110396627A CN201910794611.0A CN201910794611A CN110396627A CN 110396627 A CN110396627 A CN 110396627A CN 201910794611 A CN201910794611 A CN 201910794611A CN 110396627 A CN110396627 A CN 110396627A
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rare earth
aluminum alloy
earth aluminum
alloy wire
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CN110396627B (en
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闫建平
李雄飞
徐定能
陈青松
陈卫平
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HUNAN ORIENTAL SCANDIUM INDUSTRY CO LTD
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HUNAN ORIENTAL SCANDIUM INDUSTRY CO LTD
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

Abstract

The rare earth aluminum alloy wire and preparation method thereof that the present invention relates to a kind of for 3D printing, in the rare earth aluminum alloy wire, Mg content is 3-5wt%, and RE content is 0.4-1.2wt%, and Zr content is 0.1-1.0wt%, Mn content is 0.1-1.0wt%, Ti content is 0.05-0.25wt%, O content≤0.05wt%, N content≤0.02wt%, H content≤0.01wt%, surplus are Al and inevitable impurity；Wherein, the ratio between the Mn content and RE content are 0.5~1:1, and the ratio between the Zr content and RE content are 0.2~1:1.Rare earth and zr element is added in the present invention on the basis of almag ingredient, refines crystal grain, while generating Al3(REZr) precipitation strength, smooth not easy to break for 3D printer upper wire feeding hose, intensity is high, guarantees the precision of product printing；Part consistency after printing is high, has good mechanical property and corrosion resistance.

Description

A kind of rare earth aluminum alloy wire and preparation method thereof for 3D printing
Technical field
The rare earth aluminum alloy wire and preparation method thereof that the present invention relates to a kind of for 3D printing belongs to material preparation neck Domain.
Background technique
3D printing is a kind of advanced Digitized Manufacturing Technology, it manufactures 3D solid zero by way of successively accumulating Part.A research hotspot of the laser 3D printing technology as 3D printing has high stock utilization, processing flexibility height, processing week The advantages that phase is short and is not limited by part geometry shape is especially suitable for manufacture small lot, complex-shaped part, navigates in aviation It, medical treatment, automobile, ship, the fields such as nuclear power have a wide range of applications.
Metal material increasing material manufacturing can be divided into two kinds of technology modes of powder feeding/powdering and wire feed, wherein based on metal powder Increasing material manufacturing forming accuracy is high, is suitble to the small members of machining shape complexity, but stock utilization is low, and powder has environment Certain pollution exists simultaneously the more demanding problem of operating environment；Currently, aluminium alloy printed material is mainly with powder both at home and abroad Based on material, ingredient is mainly AlSi10Mg and AlSi12Two kinds, there is the printing not high (σ of product strengthb< 350Mpa), form ruler The problems such as very little small.In contrast, the stock utilization of wire feed increasing material manufacturing is very high, pollution-free, more economical practical, is suitble to processing Large-size components are the processing methods having complementary advantages with powder increases material manufacturing technology.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of for the rare earth aluminum alloy wire of 3D printing and its preparation side Method, the rare earth aluminum alloy wire excellent in mechanical performance is not easy to break, and guarantees the smooth progress of wire feed during 3D printing.
In order to solve the above-mentioned technical problem, technical scheme is as follows:
A kind of rare earth aluminum alloy wire for 3D printing, the diameter of the rare earth aluminum alloy wire are 0.5~2mm, are resisted Tensile strength > 320Mpa is further 350-550MPa, and yield strength > 300Mpa is further 325-500MPa；The rare earth aluminium In alloy wire, Mg content is 3-5wt%, and RE content is 0.4-1.2wt%, and Zr content is 0.1-1.0wt%, and Mn content is 0.1-1.0wt%, Ti content be 0.05-0.25wt%, O content≤0.05wt%, N content≤0.02wt%, H content≤ 0.01wt%, surplus are Al and inevitable impurity；Wherein, the ratio between the Mn content and RE content are 0.5~1:1, described The ratio between Zr content and RE content are 0.2~1:1.
The part Mn in alloy is solid-solution in matrix Al, remaining is with MnAl6The form of phase is present in tissue.Mn can be improved The recrystallization temperature of alloy organizes grain coarsening, improves alloy strength, while adding Mn to make the solubility of Mg in the base It reduces, reduces the crackle tendency in printing, improve the intensity of 3D printing part and welding wire.
Zr is added in rare earth aluminium alloy can form Al3(RE, Zr) particle, the particle can effectively improve alloy properties Can, compare Al3RE and Al3Zr particle, Al3(RE, Zr) particle has more preferably strengthening effect and stability.
Further, in the rare earth aluminum alloy wire, Mg content is 3-5wt%, and RE content is 0.4-1.2wt%, and Zr contains Amount is 0.08-1.2wt%, and Mn content is 0.2-1.2wt%, and Ti content is 0.05-0.25wt%, O content≤0.05wt%, N Content≤0.02wt%, H content≤0.01wt%, surplus are Al and inevitable impurity
Further, the RE is one of Er, Yb, Y, Sc, Tb, Ce, Sm or a variety of.Preferably, the RE be Er, Y, one of Sc or a variety of.
Preferably, Mn content is 0.3~0.7wt%.
Preferably, Mg content is 4~5wt%.
Preferably, RE content is 0.4~1.0wt%.
Preferably, Zr content is 0.1~0.5wt%.
Further, RE Sc, Sc content are between 0.6-0.7wt%.
Further, RE Er, Er content are between 0.65-0.7wt%.
Further, RE Y, Y content are between 0.65-0.75wt%.
Preferably, the ratio between content of Zr, RE is between 0.3~0.6.
Preferably, when RE is Sc, the ratio between mass content of Zr, Sc is between 0.4~0.6.
Preferably, when RE is Er, the ratio between mass content of Zr, Er is between 0.2~0.4.
Preferably, when RE is Y, the ratio between mass content of Zr, Y is between 0.2~0.4.
Preferably, O content is less than 0.03wt%.
Preferably, N content is less than 0.015wt%.
Preferably, H content is less than 0.008wt%.
Further, N content≤0.01wt%.
Further, H content≤0.005wt%.
Further, total impurities content≤0.05wt%, single impurity content≤0.02wt%.
Further, total impurities content < 0.05wt%, single impurity content < 0.02wt%.
The preparation method of rare earth aluminum alloy wire as described above, which comprises the steps of:
S1, it is closed with fine aluminium, pure magnesium, Al-Mn intermediate alloy, Al-Zr intermediate alloy, Al-Ti intermediate alloy, the centre Al-RE Gold is that raw material carries out ingredient, obtains raw mixture；
S2, under vacuum or protective atmosphere, to S1 obtain raw mixture carry out melting after, casting, obtain alloy casting Ingot；
S3, after obtaining alloy cast ingot progress homogenizing annealing to S2, it is hot extruded into alloy bar；
S4, wire drawing process is carried out to the alloy bar that S3 is obtained, obtains the rare earth aluminum alloy wire that diameter is 0.5-2mm.
Further, the purity of Al described in S1 and Mg is all larger than 99.5wt%.
Further, in S2, smelting temperature is 760 DEG C~800 DEG C, and cast temperature is 720~760 DEG C.
Further, in S2, melting carries out in vaccum sensitive stove.
Further, in S3, homogenizing annealing temperature is 320-550 DEG C.Optionally, time of homogenized annealing 8-14h.
Further, in S3, extrusion temperature is 450-550 DEG C.
Preferably, when the rare earth element of addition (RE) is Sc, the temperature of the homogenizing annealing is 320~400 DEG C.
Preferably, when the rare earth element of addition is Er, the temperature of the homogenizing annealing is 420~500 DEG C.
Preferably, when the rare earth element of addition is Y, the temperature of the homogenizing annealing is 420~500 DEG C.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) inventor closes rare earth aluminium by regulating and controlling to each element with the repetition test of when the ratio between Zr, Mn and RE content Golden mechanical property optimizes, and grade rare earth aluminum alloy wire is smoothly made, and rare earth aluminium alloy silk obtained Material is not easy to break, it is ensured that the smooth progress of wire feed during 3D printing.
(2) vacuum melting is used, oxidation and slag inclusion are avoided；
(3) in almag ingredient, rare earth and zr element are introduced, refines crystal grain, while generating Al3(REZr) it is precipitated strong Change, printing product tensile strength reaches σb=450MPa or more；Performance is better than AlSi10Mg, printing shaping are good；
(4) due to introducing rare earth and zr element, crystal grain is refined, while generating Al3(REZr) precipitation strength, silk material intensity and Processing performance improves, and the brittleness of material is reduced by the control to impurity element, wire drawing and wire feed are not allowed easy fracture, printed Wire feed rate stabilization, good fluidity, intensity are big in journey, and molding rate is stablized, will not fracture of wire and under plume, ensure that craftwork The formed precision and appearance of printing；Part consistency after printing is high, has good mechanical property and corrosion resistance.
(5) each step of used production technology is industrial mature process, and process flow is simple, advantageously reduces production Cost.
Detailed description of the invention
Fig. 1 is the appearance enlarged drawing for the rare earth aluminum alloy wire that embodiment 1 obtains.
Fig. 2 is the appearance enlarged drawing for the rare earth aluminum alloy wire that embodiment 6 obtains.
Fig. 3 is the appearance enlarged drawing for the rare earth aluminum alloy wire that comparative example 1 obtains.
Specific embodiment
Below by specific implementation example, the technical solutions of the present invention will be further described, but of the invention It is not limited to these embodiments.
Embodiment 1
A kind of preparation method of the rare earth aluminum alloy wire for 3D printing, follows the steps below:
(1) raw material melting: in a vacuum furnace, smelting component Al-4%Mg-0.3%Mn-0.7%Er-0.3%Zr- 0.05%Ti controls Fe < 0.1%, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material choosing With pure Al, pure Mg, Al-10%Er, Al-4%Zr, Al-20%Mn, Al-5%Ti, 780 DEG C of smelting temperature, cast temperature 760 DEG C, vacuum degree is 1.35 × 10-3Pa.(each percentage is mass percent)
(2) by homogenizing annealing of the ingot casting through 480 DEG C/12h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=356Mpa, yield strength σ0.2=325Mpa；The microscopical appearance of silk material is as shown in Figure 1.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength sigma are carried out according to GB/T 228-2010 standardb=450Mpa, yield strength σ0.2=420Mpa, elongation percentage η=9%.
Embodiment 2
(1) raw material melting: in a vacuum furnace, smelting component Al-5%Mg-0.3%Mn-0.4%Sc-0.2%Zr, control Fe < 0.1% processed, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。 (each percentage is mass percent)
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=347Mpa, yield strength σ0.2=312Mpa, elongation percentage 9%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength sigma are carried out according to GB/T 228-2010 standardb=457Mpa, yield strength σ0.2=415Mpa, elongation percentage 10%.
Embodiment 3
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-0.5%Sc-0.25%Zr control Fe < 0.1% processed, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=414Mpa, yield strength σ0.2=382Mpa, elongation percentage 12%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength sigma are carried out according to GB/T 228-2010 standardb=492Mpa, yield strength σ0.2=458Mpa, elongation percentage 11%.
Embodiment 4
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-0.6%Sc-0.3%Zr control Fe < 0.1%, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=470Mpa, yield strength σ0.2=431Mpa, elongation percentage 13%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength sigma are carried out according to GB/T 228-2010 standardb=513Mpa, yield strength σ0.2=461Mpa, elongation percentage 14%.
Embodiment 5
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-0.7%Sc-0.35%Zr control Fe < 0.1% processed, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=512Mpa, yield strength σ0.2=467Mpa, elongation percentage 14%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength b=532Mpa, yield strength are carried out according to GB/T 228-2010 standard 0.2=492Mpa, elongation percentage 15%.
Embodiment 6
(1) raw material melting: in a vacuum furnace, smelting component is that Al-5%Mg-0.3%Mn-1%Sc-0.5%Zr controls Fe < 0.1%, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al- 2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=476Mpa, yield strength σ0.2The microscopical appearance of=445Mpa, elongation percentage 9%, silk material are as shown in Figure 2.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength b=549Mpa, yield strength are carried out according to GB/T 228-2010 standard 0.2=508Mpa, elongation percentage 13%.
Embodiment 7
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-1.1%Sc-0.55%Zr control Fe < 0.1% processed, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=450Mpa, yield strength σ0.2=419Mpa, elongation percentage 9%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength b=551Mpa, yield strength are carried out according to GB/T 228-2010 standard 0.2=512Mpa, elongation percentage 12%.
Embodiment 8
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-1.2%Sc-0.6%Zr control Fe < 0.1%, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=448Mpa, yield strength σ0.2=407Mpa, elongation percentage 8%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength b=564Mpa, yield strength are carried out according to GB/T 228-2010 standard 0.2=525Mpa, elongation percentage 10%.
Comparative example 1
(1) raw material melting: in a vacuum furnace, smelting component is the conjunction of Al-5%Mg-0.3%Mn-0.1%Sc-0.1%Zr Ingot, raw material selection purity are 99%Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, are poured 760 DEG C of temperature of casting, vacuum degree are 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (1) is detected using ICP, Si content 0.27%, Fe content 0.36%
(4) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=273Mpa, yield strength σ0.2The microscopical appearance of=240Mpa, silk material are as shown in Figure 3.Relative to example 1 and example 2, originally Comparative example silk material surface is compared with multiple hole, and intensity is lower, and there are more serious fracture of wire phenomenons in drawing process, due to silk Material surface quality is poor, and wire feed is unsmooth, can not be used for 3D printing.
Comparative example 2
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-0.2%Sc-0.1%Zr control Fe < 0.1%, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=296Mpa, yield strength σ0.2=267Mpa, elongation percentage 9%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength b=401Mpa, yield strength are carried out according to GB/T 228-2010 standard 0.2=355Mpa, elongation percentage 9%.
Comparative example 3
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-0.3%Sc-0.15%Zr control Fe < 0.1% processed, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=323Mpa, yield strength σ0.2=298Mpa, elongation percentage 10%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength b=410Mpa, yield strength are carried out according to GB/T 228-2010 standard 0.2=367Mpa, elongation percentage 10%.
Comparative example 4
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-1.3%Sc-0.65%Zr control Fe < 0.1% processed, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=439Mpa, yield strength σ0.2=398Mpa, elongation percentage 6%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength b=570Mpa, yield strength are carried out according to GB/T 228-2010 standard 0.2=552Mpa, elongation percentage 10%.
Comparative example 5
(1) raw material melting: in a vacuum furnace, smelting component is Al-5%Mg-0.3%Mn-1.4%Sc-0.7%Zr control Fe < 0.1%, Si < 0.1%, O < 0.03%, N < 0.01%, the alloy pig of H < 0.005%, raw material selection pure Al, pure Mg, Al-2%Sc, Al-4%Zr, Al-20%Mn, 780 DEG C of smelting temperature, 760 DEG C of cast temperature, vacuum degree is 1.35 × 10-3Pa。
(2) by homogenizing annealing of the ingot casting through 350 DEG C/10h in the step (1), skin, decaptitating are cut.
(3) ingot casting in the step (2) is continuously extruded in 500 DEG C of progress, through rough, middle drawing, annealing, finish draw silk Afterwards, peeling obtains the silk material of diameter 1.2mm, carries out Mechanics Performance Testing, silk material tensile strength according to GB/T 228-2010 standard σb=421Mpa, yield strength σ0.2=382Mpa, elongation percentage 6%.
(4) silk material in the step (3) is subjected to sample printing using laser fuse 3D printing equipment, after heat treatment It is processed into test piece.Mechanics Performance Testing, tensile strength sigma are carried out according to GB/T 228-2010 standardb=587Mpa, yield strength σ0.2=561Mpa, elongation percentage 9%.
It can be seen that fixed Mg, the content of Mn element and the ratio of Sc/Zr according to above embodiments and comparative example, Sc's Additive amount produces important influence (table 1) for the mechanical property of silk material and printed sample, with Sc and Zr additive amount It improves, tensile strength, yield strength and the elongation percentage of silk material and 3D printing sample all increase significantly；Reach in Sc content There is decline in the mechanical property of silk material after 1%, and possible cause is since Sc, Zr of high concentration can not be complete in melting It is dissolved in Al matrix, causes caused by the segregant that there is a large amount of coarse Al3 (Sc, Zr) in silk material.
1 difference Sc of table, silk material and printed sample mechanical property compare in the case of Zr additive amount
The content that above-described embodiment illustrates should be understood as that these embodiments are only used for being illustrated more clearly that the present invention, without For limiting the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalent forms of the invention Modification each fall within the application range as defined in the appended claims.

Claims (10)

1. a kind of rare earth aluminum alloy wire for 3D printing, which is characterized in that the diameter of the rare earth aluminum alloy wire is 0.5 ~2mm, tensile strength > 320Mpa are further 350-550MPa, and yield strength > 300Mpa is further 325-500MPa； In the rare earth aluminum alloy wire, Mg content is 3-5wt%, and RE content is 0.4-1.2wt%, and Zr content is 0.1-1.0wt%, Mn Content is 0.1-1.0wt%, and Ti content is 0.05-0.25wt%, O content≤0.05wt%, N content≤0.02wt%, H content ≤ 0.01wt%, surplus are Al and inevitable impurity；Wherein, the ratio between the Mn content and RE content are 0.5~1:1, institute Stating the ratio between Zr content and RE content is 0.2~1:1.
2. rare earth aluminum alloy wire according to claim 1, which is characterized in that the RE be Er, Yb, Y, Sc, Tb, Ce, One of Sm or a variety of.
3. rare earth aluminum alloy wire according to claim 1, which is characterized in that RE Sc, Sc content is in 0.6-0.7wt% Between.
4. rare earth aluminum alloy wire according to claim 1, which is characterized in that RE Er, Er content is in 0.65- Between 0.7wt%.
5. rare earth aluminum alloy wire according to claim 1, which is characterized in that RE Y, Y content is in 0.65-0.75wt% Between.
6. rare earth aluminum alloy wire according to claim 1, which is characterized in that N content≤0.015wt%.
7. rare earth aluminum alloy wire according to claim 1, which is characterized in that H content≤0.005wt%.
8. rare earth aluminum alloy wire according to claim 1-7, which is characterized in that total impurities content≤ 0.05wt%, single impurity content≤0.02wt%.
9. such as the preparation method of the described in any item rare earth aluminum alloy wires of claim 1-8, which is characterized in that including walking as follows It is rapid:
S1, it is with fine aluminium, pure magnesium, Al-Mn intermediate alloy, Al-Zr intermediate alloy, Al-Ti intermediate alloy, Al-RE intermediate alloy Raw material carries out ingredient, obtains raw mixture；
S2, under vacuum or protective atmosphere, to S1 obtain raw mixture carry out melting after, casting, obtain alloy cast ingot；
S3, after obtaining alloy cast ingot progress homogenizing annealing to S2, it is hot extruded into alloy bar；
S4, wire drawing process is carried out to the alloy bar that S3 is obtained, obtains the rare earth aluminum alloy wire that diameter is 0.5-2mm.
10. preparation method according to claim 9, which is characterized in that in S2, smelting temperature is 760 DEG C~800 DEG C, is poured Casting temperature is 720~760 DEG C.
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CN113042748B (en) * 2021-03-09 2022-10-11 中北大学 Method for preparing high-strength high-elongation Al-Cu-Mg alloy by SLM
CN113106311A (en) * 2021-03-15 2021-07-13 丽水学院 Preparation method and equipment of Al-Li-Cu-Mg series aluminum alloy wire for metal 3D printing
CN113025853A (en) * 2021-05-26 2021-06-25 中航迈特粉冶科技（北京）有限公司 High-strength aluminum alloy for additive manufacturing and preparation method thereof
CN115351460A (en) * 2022-09-01 2022-11-18 江苏中天科技股份有限公司 High-strength rare earth aluminum alloy welding wire and preparation method thereof
CN115351460B (en) * 2022-09-01 2024-01-19 江苏中天科技股份有限公司 High-strength rare earth aluminum alloy welding wire and preparation method thereof

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