CN106702224A - Semisolid extrusion forming Al-Fe-Cu alloy and preparation method thereof - Google Patents
Semisolid extrusion forming Al-Fe-Cu alloy and preparation method thereof Download PDFInfo
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- CN106702224A CN106702224A CN201710057854.7A CN201710057854A CN106702224A CN 106702224 A CN106702224 A CN 106702224A CN 201710057854 A CN201710057854 A CN 201710057854A CN 106702224 A CN106702224 A CN 106702224A
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
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- 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
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- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
-
- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- 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
-
- 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
- C22F1/057—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 copper as the next major constituent
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- Crystallography & Structural Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention provides a semisolid extrusion forming Al-Fe-Cu alloy and a preparation method thereof, and belongs to the field of aluminum alloy heat treatment. The semisolid extrusion forming Al-Fe-Cu alloy comprises, by mass, 3.0%-6.0% of Fe, 2.0%-5.0% of Cu, 0.5%-2.0% of Zn, 0.2%-0.5% of Mn, 0.3%-1.5% of Mg, and the balance Al and inevitable impurities. The preparation method comprises the steps that (1) an Al-Fe-Cu cast ingot is obtained through smelting and casting according to the component proportion of the semisolid extrusion forming Al-Fe-Cu alloy; (2) the cast ingot is heated to be semisolid, and a semisolid blank is obtained; (3) the semisolid blank is air-cooled to the room temperature after extrusion forming, and a semisolid forming workpiece is obtained; (4) warm water quenching is conducted after solid solution treatment; and (5) the semisolid forming workpiece is air-cooled to the room temperature after artificial aging treatment, so that the semisolid extrusion forming Al-Fe-Cu alloy is obtained. The tensile strength of the semisolid extrusion forming Al-Fe-Cu alloy is 200-290 MPa, the Brinell hardness is 50-70 HB, and the microstructure of the alloy is obviously improved. The preparation method of the semisolid extrusion forming Al-Fe-Cu alloy simplifies the heat treatment process and improves the production efficiency.
Description
Technical field
The invention belongs to aluminum alloy heat process field, and in particular to a kind of semi-solid state extrusion shaping Al-Fe-Cu alloys and its
Preparation method.
Background technology
Alfer has light weight, the excellent mechanical property such as high rigidity, wear-resisting, heat-resisting, anticorrosive, from 70 years 20th century
In generation, starts, and gets more and more people's extensive concerning.It is too wide in the gap with the solid solubility of aluminium yet with iron, therefore iron is very easy in aluminium
Formed fragility needle-like or sheet Fe-riched phase, these Fe-riched phases with very tip, can seriously isolate matrix, from
And turn into stress raiser, largely reduce the mechanical property of aluminium alloy.Semi-solid state forming technique has technique finished product
Rate is high, and processing temperature is low, and product size is accurately controlled, good product quality, and with advantages such as energy-saving and environmental protection.By 30
Years of researches and development, have been subjected to the great attention of people, and enter into the industrial production stage, after semi-solid-state shaping
Al-Fe-Cu alloys have mechanical property energy higher, and the potential of alloy can be further excavated by rational Technology for Heating Processing.
The present invention uses short route Technology for Heating Processing to semi-solid-state shaping Al-Fe-Cu alloys, has both improve the mechanical property of alloy, and
The energy has been saved, production efficiency has been improve.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of semi-solid state extrusion shaping Al-Fe-Cu alloys and its preparation
Method；Aim to overcome that semi-solid-state shaping Al-Fe-Cu alloys are carried using workpiece mechanical property after conventional T6 techniques heat treatment
Inapparent phenomenon high.
Semi-solid state extrusion of the invention shapes A1-Fe-Cu alloys, and constituent and its weight/mass percentage composition are：Fe：3.0
~6.0%, Cu：2.0~5.0%, Zn：0.5~2.0%, Mn：0.2~0.5%, Mg：0.3~1.5%, balance of Al and not
Evitable impurity.
Semi-solid state extrusion of the invention shapes Al-Fe-Cu alloys, and its tensile strength is 200~290MPa, and Brinell hardness is
50~70HB.
Semi-solid state extrusion of the invention shapes the preparation method of Al-Fe-Cu alloys, comprises the following steps：
Step 1, melting：
The composition proportion of Al-Fe-Cu alloys is shaped by semi-solid state extrusion, melting casting is obtained Al-Fe-Cu ingot castings；
Step 2, is heated to semisolid：
By Al-Fe-Cu ingot castings, semisolid is heated to, semi-solid blank is obtained；Wherein, heating-up temperature is 620~650 DEG C,
0.5~2h of heat time；
Step 3, extruding：
Semi-solid blank is put into semi-solid shaping die, extrusion molding is air cooled to room temperature, semi-solid-state shaping is obtained
Workpiece；Wherein, the temperature of mould is 350~450 DEG C, and extrusion ratio is 5~120,5~12mm/s of extrusion speed, and the dwell time is
10~60s；
Step 4, solution treatment：
(1) by semi-solid-state shaping workpiece, solution treatment is carried out, solid solubility temperature is 515~535 DEG C, solution time is 5~
30min；
(2) by the workpiece after solution treatment, quenched with 60~80 DEG C of warm water；
Step 5, artificial aging treatment：
(1) by the workpiece after quenching, artificial aging treatment, 155~175 DEG C of temperature, 6~12h of time are carried out；
(2) workpiece after artificial aging is processed, is air cooled to room temperature, and semi-solid state extrusion shaping Al-Fe-Cu alloys are obtained.
In the preparation method of above-mentioned semi-solid state extrusion shaping Al-Fe-Cu alloys：
In the step 1, smelting temperature is 720~750 DEG C.
In the step 3, extrusion ratio is 5~120.
In the step 4, solution treatment is quenched after coming out of the stove with 60~80 DEG C of warm water.
In the step 4, the volumetric surface product according to section bar, with due regard to heat conduction time, and then determination solution time.
In the step 4, solution treatment is solution treatment in short-term.
In the step 5, artificial aging treatment is carried out using resistance aging furnace, room temperature is air cooled to after coming out of the stove.
Semi-solid state extrusion shaping Al-Fe-Cu alloys of the invention and preparation method thereof, compared with prior art, beneficial effect
It is really：
(1) present invention, is heat-treated using short route Technology for Heating Processing to semi-solid state extrusion shaping Al-Fe-Cu alloys,
Both the mechanical property caused by the enrichment phenomenon of Cu elements in alloy had been avoided to be remarkably decreased, and had greatly saved the energy, dropped
The production cost of Di Liao enterprises；
(2) present invention, simplifies Technology for Heating Processing, the heat treatment production efficiency of alloy is improve, for semi-solid state extrusion
The production application for shaping Al-Fe-Cu alloys is significant；
(3) microscopic structure of alloy is obviously improved, and mechanical property has significant raising；
(4) preparation method of the present invention, whole technological operation is simple, preferably can be applied in actual production.
Brief description of the drawings
The step 3 of Fig. 1 embodiment of the present invention 1 prepares the microscopic structure of the workpiece after quenching；Wherein, (1) and (2) correspondence is different
Multiplication factor；
Semi-solid state extrusion prepared by Fig. 2 embodiment of the present invention 1 shapes the microscopic structure of Al-Fe-Cu alloys；Wherein, (3) and
(4) the different multiplication factor of correspondence.
Specific embodiment
Embodiment 1
A kind of semi-solid state extrusion shapes Al-Fe-Cu alloys, and constituent and its weight/mass percentage composition are：Fe：5.5%,
Cu：4.0%, Zn：2.0%, Mn：0.5%, Mg：0.4%, balance of Al and inevitable impurity.
Above-mentioned semi-solid state extrusion shapes the preparation method of Al-Fe-Cu alloys, comprises the following steps：
Step 1, melting：
The composition proportion of Al-Fe-Cu alloys is shaped by semi-solid state extrusion, melting is carried out at 720 DEG C, in 690 DEG C of casting systems
Obtain Al-Fe-Cu ingot castings；
Step 2, is heated to semisolid：
By Al-Fe-Cu ingot castings, semisolid is heated to, semi-solid blank is obtained；Wherein, heating-up temperature is 630 DEG C, heating
Time 1h；
Step 3, extruding：
Semi-solid shaping die is preheated into 4h at 450 DEG C, after preheating terminates, mould is fitted into extruder；
Semi-solid blank is put into semi-solid shaping die, extrusion molding is air cooled to room temperature, extrusion molding half is obtained
Solid molding workpiece；Wherein, extrusion ratio is 20, and extrusion speed 10mm/s, the time is 60s；
Step 4, solution treatment：
(1) by semi-solid-state shaping workpiece, solution treatment is carried out, solid solubility temperature is 525 DEG C, and solution time is 15min；
(2) by the workpiece after solution treatment, the quick taking-up from stove of test specimen is quenched with 60 DEG C of warm water；
Shown in the microscopic structure of the workpiece after quenching such as Fig. 1 (1) and (2)；
Step 5, artificial aging treatment：
(1) by the workpiece after quenching, artificial aging treatment, 165 DEG C of temperature, time 6h are carried out using artificial aging stove stove；
(2) workpiece after artificial aging is processed, room temperature is air cooled to after coming out of the stove, and semi-solid state extrusion shaping Al-Fe-Cu is obtained
Alloy.
Al-Fe-Cu alloys manufactured in the present embodiment, shown in its microscopic structure such as Fig. 2 (3) and (4), comparison diagram 1 (1) and
(2), it is apparent that Al in alloy structure2Cu phases are substantially decomposed, and are evenly distributed in matrix.
Al-Fe-Cu alloys manufactured in the present embodiment, its tensile strength reaches 256MPa, and now Brinell hardness is 66HB；Become
Shape Al-5.5Fe-4Cu alloy mechanical properties are more preferable.
Embodiment 2
A kind of semi-solid state extrusion shapes Al-Fe-Cu alloys, and constituent and its weight/mass percentage composition are：Fe：6.0%,
Cu：5.0%, Zn：2.0%, Mn：0.5%, Mg：1.5%, balance of Al and inevitable impurity.
Above-mentioned semi-solid state extrusion shapes the preparation method of Al-Fe-Cu alloys, comprises the following steps：
Step 1, melting：
The composition proportion of Al-Fe-Cu alloys is shaped by semi-solid state extrusion, melting is carried out at 750 DEG C, in 680 DEG C of melting systems
Obtain Al-Fe-Cu ingot castings；
Step 2, is heated to semisolid：
By Al-Fe-Cu ingot castings, semisolid is heated to, semi-solid blank is obtained；Wherein, heating-up temperature is 630 DEG C, heating
Time 1h；
Step 3, extruding：
Semi-solid shaping die is preheated into 4h at 450 DEG C, after preheating terminates, mould is fitted into extruder；
Semi-solid blank is put into semi-solid shaping die, extrusion molding is air cooled to room temperature, extrusion molding half is obtained
Solid molding workpiece；Wherein, extrusion ratio is 8, and extrusion speed 12mm/s, the dwell time is 20s；
Step 4, solution treatment：
(1) by semi-solid-state shaping workpiece, solution treatment is carried out, solid solubility temperature is 525 DEG C, and solution time is 20min；
(2) by the workpiece after solution treatment, the quick taking-up from stove of test specimen is quenched with 60 DEG C of warm water；
Step 5, artificial aging treatment：
(1) by the workpiece after quenching, artificial aging treatment, 165 DEG C of temperature, time 10h are carried out using artificial aging stove stove；
(2) workpiece after artificial aging is processed, room temperature is air cooled to after coming out of the stove, and semi-solid state extrusion shaping Al-Fe-Cu is obtained
Alloy.
Al-Fe-Cu alloys manufactured in the present embodiment, its tensile strength reaches 290MPa, and now Brinell hardness is 60HB；Become
Shape Al-5.5Fe-4Cu alloy mechanical properties are more preferable.
Embodiment 3
A kind of semi-solid state extrusion shapes Al-Fe-Cu alloys, and constituent and its weight/mass percentage composition are：Fe：3.0%,
Cu：2.0%, Zn：0.5%, Mn：0.2%, Mg：0.3%, balance of Al and inevitable impurity.
Above-mentioned semi-solid state extrusion shapes the preparation method of Al-Fe-Cu alloys, comprises the following steps：
Step 1, melting：
The composition proportion of Al-Fe-Cu alloys is shaped by semi-solid state extrusion, melting is carried out at 725 DEG C, in 700 DEG C of melting systems
Obtain Al-Fe-Cu ingot castings；
Step 2, is heated to semisolid：
By Al-Fe-Cu ingot castings, semisolid is heated to, semi-solid blank is obtained；Wherein, heating-up temperature is 630 DEG C, heating
Time 1h；
Step 3, extruding：
Semi-solid shaping die is preheated into 4h at 450 DEG C, after preheating terminates, mould is fitted into extruder；
Semi-solid blank is put into semi-solid shaping die, extrusion molding is air cooled to room temperature, extrusion molding half is obtained
Solid molding workpiece；Wherein, extrusion ratio is 60, and extrusion speed 5mm/s, the dwell time is 30s；
Step 4, solution treatment：
(1) by semi-solid-state shaping workpiece, solution treatment is carried out, solid solubility temperature is 525 DEG C, and solution time is 30min；
(2) by the workpiece after solution treatment, the quick taking-up from stove of test specimen is quenched with 60 DEG C of warm water；
Step 5, artificial aging treatment：
(1) by the workpiece after quenching, artificial aging treatment, 165 DEG C of temperature, time 8h are carried out using artificial aging stove stove；
(2) workpiece after artificial aging is processed, room temperature is air cooled to after coming out of the stove, and semi-solid state extrusion shaping Al-Fe-Cu is obtained
Alloy.
Al-Fe-Cu alloys manufactured in the present embodiment, its tensile strength reaches 220MPa, and now Brinell hardness is 70HB；Become
Shape Al-5.5Fe-4Cu alloy mechanical properties are more preferable.
Claims (7)
1. a kind of semi-solid state extrusion shapes Al-Fe-Cu alloys, it is characterised in that the constituent and its quality hundred of the alloy
Point content is：Fe：3.0~6.0%, Cu：2.0~5.0%, Zn：0.5~2.0%, Mn：0.2~0.5%, Mg：0.3~
1.5%, balance of Al and inevitable impurity.
2. semi-solid state extrusion according to claim 1 shapes Al-Fe-Cu alloys, it is characterised in that the tension of the alloy
Intensity is 200~290MPa, and Brinell hardness is 50~70HB.
3. the semi-solid state extrusion described in claim 1 shapes the preparation method of Al-Fe-Cu alloys, it is characterised in that including as follows
Step：
Step 1, melting：
The composition proportion of Al-Fe-Cu alloys is shaped by semi-solid state extrusion, melting casting is obtained Al-Fe-Cu ingot castings；
Step 2, is heated to semisolid：
By Al-Fe-Cu ingot castings, semisolid is heated to, semi-solid blank is obtained；Wherein, heating-up temperature is 620~650 DEG C, heating
0.5~2h of time；
Step 3, extruding：
Semi-solid blank is put into semi-solid shaping die, extrusion molding, semi-solid-state shaping workpiece is obtained；Wherein, mould
Temperature is 350~450 DEG C, and extrusion ratio is 5~120,5~12mm/s of extrusion speed, and the dwell time is 10~60s；Extrusion molding
After be down to room temperature；
Step 4, solution treatment：
(1) by semi-solid-state shaping workpiece, solution treatment is carried out, solid solubility temperature is 515~535 DEG C, and solution time is 5~30min；
(2) by the workpiece after solution treatment, quenched with 60~80 DEG C of warm water；
Step 5, artificial aging treatment：
(1) by the workpiece after quenching, artificial aging treatment, 155~175 DEG C of temperature, 6~12h of time are carried out；
(2) workpiece after artificial aging is processed, is air cooled to room temperature, and semi-solid state extrusion shaping Al-Fe-Cu alloys are obtained.
4. semi-solid state extrusion according to claim 3 shapes the preparation method of Al-Fe-Cu alloys, it is characterised in that described
In step 1, smelting temperature is 720~750 DEG C.
5. semi-solid state extrusion according to claim 3 shapes the preparation method of Al-Fe-Cu alloys, it is characterised in that state step
In rapid 3, extrusion ratio is 5~60.
6. semi-solid state extrusion according to claim 3 shapes the preparation method of Al-Fe-Cu alloys, it is characterised in that described
In step 5, artificial aging treatment is carried out using resistance aging furnace.
7. semi-solid state extrusion according to claim 3 shapes the preparation method of Al-Fe-Cu alloys, it is characterised in that described
Method prepare semi-solid state extrusion shaping Al-Fe-Cu alloys, its tensile strength be 200~290MPa, Brinell hardness be 50~
70HB。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034844A (en) * | 2017-12-29 | 2018-05-15 | 燕山大学 | A kind of semi-solid-state shaping method of the constituent element high-entropy alloy such as high-melting-point |
| CN114875284A (en) * | 2022-05-30 | 2022-08-09 | 山东南山铝业股份有限公司 | Al-Zn-Mg-Er-Zr series reinforced aluminum alloy and preparation method thereof |
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| US7625454B2 (en) * | 2004-07-28 | 2009-12-01 | Alcoa Inc. | Al-Si-Mg-Zn-Cu alloy for aerospace and automotive castings |
| CN101230432A (en) * | 2008-02-22 | 2008-07-30 | 沈阳工业大学 | Method for preparing high-strength heat-resistant ferro-aluminium alloy parts |
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| CN108034844A (en) * | 2017-12-29 | 2018-05-15 | 燕山大学 | A kind of semi-solid-state shaping method of the constituent element high-entropy alloy such as high-melting-point |
| CN108034844B (en) * | 2017-12-29 | 2019-07-26 | 燕山大学 | A kind of semi-solid-state shaping method of the constituent elements high-entropy alloys such as high-melting-point |
| CN114875284A (en) * | 2022-05-30 | 2022-08-09 | 山东南山铝业股份有限公司 | Al-Zn-Mg-Er-Zr series reinforced aluminum alloy and preparation method thereof |
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