CN101323923A - Yttrium or samarium containing anti-recrystallizing corrosion resistant aluminum alloy - Google Patents
Yttrium or samarium containing anti-recrystallizing corrosion resistant aluminum alloy Download PDFInfo
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- CN101323923A CN101323923A CNA2007100351101A CN200710035110A CN101323923A CN 101323923 A CN101323923 A CN 101323923A CN A2007100351101 A CNA2007100351101 A CN A2007100351101A CN 200710035110 A CN200710035110 A CN 200710035110A CN 101323923 A CN101323923 A CN 101323923A
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Abstract
The invention discloses a recrystallization resistant and anti-corrosion aluminum alloy containing yttrium or samarium. The alloy consists of main alloy element Al-Mg-(Zn-Cu) and Zr-Cr-Y or Sm accounting for 0.1 to 1.3 percent of the alloy by mass percentage. By compounding and adding Zr, Cr and Y or Sm to an Al-Mg-(Zn-Cu) alloy, the dispersed phase of a multi-element aluminide is formed, which can effectively restrain the recrystallization of the Al-Mg-(Zn-Cu) alloy, maintain deformation recovering tissues and promote the strength, cracking resistance and anti-stress-corrosion performance of the alloy; in addition, the prices of Zr, Cr and Y or Sm are relatively cheap, thus being suitable for industrialized production.
Description
Technical field
The invention belongs to the metal alloy field, particularly anti-recrystallizing corrosion resistant aluminum alloy.
Background technology
Forming fine disperse phase by multicomponent microalloying, suppress recrystallize and grain growth, maintenance deformation-recovery tissue effectively, is one of approach that improves simultaneously intensity of aluminum alloy and corrosion resistance.In early days, form non-coherence aluminide disperse phase by adding trace Cr, Mn.After change into and add Zr, form metastable L1
2Type Al
3Zr disperse phase has improved the drag that suppresses recrystallize like this, has improved stress corrosion resistance, but metastable L1
2Type Al
3When growing at high temperature, Zr can change the stable DO of non-coherence in homogenizing and the solution treatment into
23Type Al
3Zr disperse phase, therefore, the effect that suppresses recrystallize can decrease.Add micro alloying element Sc and suppress recrystallize effect best bet at present, it can form the fine Al with the matrix coherence
3Sc disperse phase particle can improve the toughness and the anti-stress corrosion performance of alloy when improving intensity; Also can use Zr instead of part Sc, form polynary aluminide, effect is more remarkable.But owing to costing an arm and a leg of Sc, the market price is about 40,000 yuans/kilogram at present, therefore, is difficult to be actually used in the production of commercial aluminum alloy.
Summary of the invention
The objective of the invention is the low-cost micro alloying element of compound interpolation in Al-Mg-(Zn-Cu) aluminium alloy, to form new and effective polynary aluminide disperse phase, the recrystallize that effectively suppresses alloy, intensity, anti-fracture toughness property and the anti-stress corrosion performance of raising alloy.
Detailed technology scheme of the present invention is: a kind of anti-recrystallizing corrosion resistant aluminum alloy that contains yttrium or samarium, comprise main alloying element Al-Zn-Mg or Al-Zn-Mg-Cu or Al-Mg or Al-Cu-Mg, and total content to account for alloy mass per-cent be 0.1～1.3% Zr-Cr-Y or Zr-Cr-Sm.Wherein Zn, Mg, the Cu mass percent that accounts for alloy is preferably: Zn:0～9.2%; Mg:0.2～5.6%; Cu:0～6.8%.
Wherein Zr, Cr and Rare Earth Y or the Sm mass percent that accounts for alloy is respectively: Zr:0.02～0.35%; Cr:0.04～0.5%; Y:0.02～0.45%; Sm:0.03～0.45%.
In above-mentioned aluminium alloy, also can add Mn, Ti by trace, the mass percent that adds Mn, Ti is: Mn:0～0.5%; Ti:0～0.1%.
The present invention adds in the Zr in Al-Mg-(Zn-Cu) alloy, compound interpolation Cr and Rare Earth Y or Sm, form polynary disperse phase, the recrystallize that has effectively suppressed Al-Mg-(Zn-Cu) alloy, keep the deformation recovery tissue, improved intensity, fracture toughness property and the anti-stress corrosion performance of Al-Zn-Mg-Cu or Al-Zn-Mg alloy.And microalloy such as Zr, Cr and rare earth metal y or Sm price are relatively cheap, are suitable for suitability for industrialized production.Anti-recrystallizing corrosion resistant Al-Mg-(Zn-Cu) alloy that contains Zr and Cr and Rare Earth Y or Sm of the present invention may be used on every field.
Description of drawings
Fig. 1: the A-1 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 1;
Fig. 2: the A-2 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 2;
Fig. 3: the A-3 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 3;
Fig. 4: the A-4 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 4;
Fig. 5: the A-5 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 5;
Fig. 6: the A-6 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 6;
Fig. 7: the A-7 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 7;
Fig. 8: the A-8 alloy solid solution attitude metallographic microstructure figure of Comparative Examples 8;
The B-1 alloy solid solution attitude metallographic microstructure figure of Fig. 9: embodiment 1;
The B-2 alloy solid solution attitude metallographic microstructure figure of Figure 10: embodiment 2;
The B-3 alloy solid solution attitude metallographic microstructure figure of Figure 11: embodiment 3;
The B-4 alloy solid solution attitude metallographic microstructure figure of Figure 12: embodiment 4;
The B-5 alloy solid solution attitude metallographic microstructure figure of Figure 13: embodiment 5;
The B-6 alloy solid solution attitude metallographic microstructure figure of Figure 14: embodiment 6;
The B-7 alloy solid solution attitude metallographic microstructure figure of Figure 15: embodiment 7;
The B-8 alloy solid solution attitude metallographic microstructure figure of Figure 16: embodiment 8;
The B-9 alloy solid solution attitude metallographic microstructure figure of Figure 17: embodiment 9;
The B-10 alloy solid solution attitude metallographic microstructure figure of Figure 18: embodiment 10;
The B-11 alloy solid solution attitude metallographic microstructure figure of Figure 19: embodiment 11;
The B-12 alloy solid solution attitude metallographic microstructure figure of Figure 20: embodiment 12;
The B-13 alloy solid solution attitude metallographic microstructure figure of Figure 21: embodiment 13;
The B-14 alloy solid solution attitude metallographic microstructure figure of Figure 22: embodiment 14;
The B-1 alloy aging attitude transmission electron microscope organization chart of Figure 23: embodiment 1;
Figure 24: the alloy crack growth rate v-stress intensity factor graphic representation of Comparative Examples 1, embodiment 1～2 in the 3.5%NaCl aqueous solution under the T6 aging state;
Figure 25: the alloy crack growth rate v-stress intensity factor graphic representation of Comparative Examples 2, embodiment 3～4 in the 3.5%NaCl aqueous solution under the T6 aging state;
Figure 26: the alloy crack growth rate v-stress intensity factor graphic representation of Comparative Examples 3, embodiment 5～6 in the 3.5%NaCl aqueous solution under the T6 aging state;
Figure 27: the alloy crack growth rate v-stress intensity factor graphic representation of Comparative Examples 4, embodiment 7～8 in the 3.5%NaCl aqueous solution under the T6 aging state;
Figure 28: the alloy crack growth rate v-stress intensity factor graphic representation of Comparative Examples 5, embodiment 9～10 in the 3.5%NaCl aqueous solution under the T6 aging state.
Embodiment
Comparative Examples 1: the ingot metallurgy legal system is equipped with the A-1 alloy in the table 1.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Zr master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Comparative Examples 2: the A-2 alloy in the preparation table 1.The preparation method is as described in the Comparative Examples 1.
Comparative Examples 3: the A-3 alloy in the preparation table 1.The preparation method is as described in the Comparative Examples 1.
Comparative Examples 4: the A-4 alloy in the preparation table 1.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Zr, Al-Sc master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Comparative Examples 5: the A-5 alloy in the preparation table 1.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add the Al-Zr master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Comparative Examples 6: the A-6 alloy in the preparation table 1.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add the Al-Cu master alloy, reduce to 760 ℃, add technical pure Mg (purity is 99.9%), after removing surperficial slag, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Comparative Examples 7: the A-7 alloy in the preparation table 1.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 760 ℃, after the rafifinal fusing, add technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Comparative Examples 8: the A-8 alloy in the preparation table 1.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Zr, Al-Cr, Al-Mn, Al-Ti master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 1: B-1 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Y master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 2: B-2 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Sm master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 3: B-3 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Y master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 4: B-4 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Sm master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 5: B-5 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Y master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 6: B-6 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Sm master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 7: B-7 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cr, Al-Zr, Al-Y master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 8: B-8 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cr, Al-Zr, Al-Sm master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 9: B-9 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Y master alloy, reduce to 760 ℃, add technical pure Mg (purity is 99.9%), after removing surperficial slag, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 10: B-10 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Cr, Al-Zr, Al-Sm master alloy, reduce to 760 ℃, add technical pure Mg (purity is 99.9%), after removing surperficial slag, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 11: B-11 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cr, Al-Zr, Al-Y master alloy, reduce to 760 ℃, add technical pure Mg (purity is 99.9%), after removing surperficial slag, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 12: B-12 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cr, Al-Zr, Al-Sm master alloy, reduce to 760 ℃, add technical pure Mg (purity is 99.9%), after removing surperficial slag, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 13: B-13 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Zr, Al-Cr, Al-Mn, Al-Ti, Al-Y master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
Embodiment 14: B-14 alloy in the preparation table.Rafifinal (purity is 99.99%) is joined the graphite clay crucible, melting in electrical crucible, smelting temperature is 780 ℃, after the rafifinal fusing, add Al-Cu, Al-Zr, Al-Cr, Al-Mn, Al-Ti, Al-Sm master alloy, reduce to 760 ℃, add technical pure Zn (purity is 99.9%), fusing also stirs the back and adds technical pure Mg (purity is 99.9%), remove surperficial slag after, add 0.2%～0.4% hexachloroethane (C
2Cl
6) degasification of refining agent deslagging, left standstill 10～15 minutes, pour in the swage cooling back demoulding.
A-1 alloy, A-2 alloy, A-3 alloy, A-4 alloy, B-1 alloy, B-2 alloy, B-3 close, B-4 alloy, B-5 alloy, B-6 alloy gold ingot casting be behind 465 ℃/24h homogenizing annealing, carry out hot extrusion at 410 ℃～430 ℃ again, extrusion ratio is 12.2, carry out solution treatment afterwards, the solid solution system is as follows: 450 ℃ are incubated 1 hour, are warming up to 470 ℃ of insulations 1 hour, continue to be warming up to 480 ℃ of insulations 2 hours, cold-water quench, T6 timeliness (130 ℃ are incubated 24 hours).
A-5 alloy, B-7 alloy, B-8 alloy, A-8 alloy, B-13 alloy, B-14 alloy cast ingot are behind 465 ℃/24h homogenizing annealing, carry out hot extrusion at 410 ℃-430 ℃ again, extrusion ratio is 12.2, carry out solution treatment afterwards, solid solubility temperature is 475 ℃, cold-water quench, T6 timeliness (120 ℃ are incubated 24 hours).
A-6 alloy, B-9 alloy, B-10 alloy cast ingot are behind 500 ℃/20h homogenizing annealing, carry out hot extrusion at 410 ℃～430 ℃ again, extrusion ratio is 12.2, carry out solution treatment afterwards, the solid solution system is as follows: 490 ℃ are incubated 2 hours, be warming up to 506 ℃ of insulations 20 minutes, cold-water quench, T6 timeliness (160 ℃ are incubated 18 hours).
A-7 alloy, B-11 alloy, B-12 alloy cast ingot are behind 470 ℃/13h homogenizing annealing, carry out hot extrusion at 410 ℃～430 ℃ again, extrusion ratio is 12.2, carry out solution treatment afterwards, the solid solution system is as follows: 450 ℃ are incubated 1 hour, be warming up to 470 ℃ of insulations 1 hour, continue to be warming up to 480 ℃ of insulations 1 hour.
Get alloy solid solution attitude sample, under the MeF3A metaloscope, observe microtexture behind electropolishing and the anode overlay film with polarized light.Fig. 1～8 are respectively the solid solution attitude micro-organization chart of A-1～A-g alloy; Fig. 9～Figure 22 is respectively the solid solution attitude micro-organization chart of B-1～B-14 alloy.With the distribution of precipitated phase after JEOL-100 transmission electron microscope observation B-1 alloy and the timeliness, Figure 23 is the aging state transmission electron microscope tissue of B-1 alloy.
Recrystallize has wholly or in part taken place in the A-1～A-8 of Comparative Examples (corresponding to accompanying drawing 1～8) alloy after extruding, solution treatment.And the solid solution attitude microstructure of B-2, the B-4 of the B-1 of compound interpolation Zr-Cr-Y, B-3, B-5, B-7, B-9, B-11, B-13 alloy (corresponding to accompanying drawing 9,11,13,15,17,19,21) and compound interpolation Zr-Cr-Sm, B-6, B-8, B-10, B-12, B-14 alloy (corresponding to accompanying drawing 10,12,14,16,18,20,22) is fibrous processing attitude tissue, and recrystallize does not take place.
In Al-Zn-Mg-Cu or Al-Zn-Mg alloy, add the A-1 of micro-Zr separately, A-2, A-3, it is (corresponding to accompanying drawing 1～3 that tangible recrystallize has taken place the A-5 alloy, 5), and the B-1 of compound interpolation Zr-Cr-Y, B-3, B-5, the B-2 of B-7 or compound interpolation Zr-Cr-Sm, B-4, B-6, B-8 still keeps fibrous processing attitude tissue (corresponding to accompanying drawing 9～16) substantially, with the A-8 alloy ratio that the part recrystallize takes place (referring to accompanying drawing 8), the B-14 alloy of the B-13 of compound interpolation Zr-Cr-Y or compound interpolation Zr-Cr-Sm still keeps fibrous processing attitude tissue (referring to accompanying drawing 21 substantially, 22).Therefore say that compound interpolation Zr-Cr-Y or compound interpolation Zr-Cr-Sm have suppressed recrystallize preferably in Al-Zn-Mg-Cu or the Al-Zn-Mg alloy.
In Al-Cu-Mg and Al-Mg alloy, A-6, the A-7 alloy that does not add Zr-Cr-Y or Zr-Cr-Sm takes place significantly, and (fully) recrystallize also is fine isometric crystal grains (corresponding to accompanying drawing 6,7), and the B-10 of the B-9 of compound interpolation Zr-Cr-Y, B-11 alloy or compound interpolation Zr-Cr-Sm, B-12 alloy still keep fibrous processing attitude tissue (corresponding to accompanying drawing 17,19,18,20) substantially, therefore say that compound interpolation Zr-Cr-Y or Zr-Cr-Sm have suppressed recrystallize preferably in Al-Cu-Mg or the Al-Mg alloy.
Table 2 is under the T6 aging state, microalloying Al-Zn-Mg-Cu or Al-Zn-Mg hardness of alloy, mechanical property and stress intensity factor data sheet.As can be seen from Table 2, hardness, mechanical property and the stress corrosion performance of the B-2 alloy aging attitude of the B-1 alloy of interpolation Zr-Cr-Y or Zr-Cr-Sm all are better than the A-1 alloy in the Comparative Examples 1; Hardness, mechanical property and the stress corrosion performance of the B-3 alloy of interpolation Zr-Cr-Y or the B-4 alloy aging attitude of Zr-Cr-Sm all is better than the A-2 alloy in the Comparative Examples 2; Hardness, mechanical property and the stress corrosion performance of the B-5 alloy of interpolation Zr-Cr-Y or the B-6 alloy aging attitude of Zr-Cr-Sm all is better than Comparative Examples 3 and adds the A-3 alloy of Zr and the A-4 alloy that Comparative Examples 4 is added Zr-Sc; Hardness, mechanical property and the stress corrosion performance of the B-7 alloy of interpolation Zr-Cr-Y or the B-8 alloy aging attitude of Zr-Cr-Sm all is better than the A-5 alloy in the Comparative Examples 5.Hardness, mechanical property and the stress corrosion performance of the B-13 alloy of interpolation Zr-Cr-Y or the B-14 alloy aging attitude of Zr-Cr-Sm all is better than the A-8 alloy in the Comparative Examples 8.
Add the B-1 alloy of Zr-Cr-Y or the B-2 alloy stress corrosive nature of Zr-Cr-Sm and be better than the A-1 alloy (referring to accompanying drawing 24) that Comparative Examples 1 only contains Zr; Add the B-3 alloy of Zr-Cr-Y or the B-4 alloy stress corrosive nature of Zr-Cr-Sm and be better than the A-2 alloy (referring to accompanying drawing 25) that Comparative Examples 2 only contains Zr; Add the B-5 alloy of Zr-Cr-Y or the B-6 alloy stress corrosive nature of Zr-Cr-Sm and be better than the A-3 alloy (referring to accompanying drawing 26) that Comparative Examples 3 only contains Zr; Add the B-7 alloy of Zr-Cr-Y or the B-8 alloy stress corrosive nature of Zr-Cr-Sm and all be better than the A-4 alloy (referring to accompanying drawing 27) that Comparative Examples 4 contains Zr-Sc; Add the B-9 alloy of Zr-Cr-Y or the B-10 alloy stress corrosive nature of Zr-Cr-Sm and be better than the A-5 alloy (referring to accompanying drawing 28) that Comparative Examples 5 contains Zr.Intensity, plasticity and anti-fracture toughness property that Zr-Cr-Y or Zr-Cr-Sm have not only improved Al-Zn-Mg-(Cu) alloy are added in more than explanation, have also improved the anti-stress corrosion performance of alloy simultaneously.
Alloying constituent in each application examples of table 1 (mass percent, %)
Microalloying Al-Zn-Mg-(Cu) hardness of alloy, mechanical property and stress intensity factor under the table 2T6 aging state
Annotate: K
ICDirection of crack propagation is the direction of extrusion during test
Claims (3)
1. one kind contains yttrium or samarium anti-recrystallizing corrosion resistant aluminum alloy, comprise main alloying element Al-Zn-Mg-Cu or Al-Zn-Mg or Al-Mg or Al-Mg-Cu, it is characterized in that: comprise also that to account for alloy mass per-cent be 0.1～1.3% Zr-Cr-Y or Zr-Cr-Sm, the mass percent that described Zn, Mg, Cu element account for alloy is respectively: Zn:0～9.2%; Mg:0.2～5.6%; Cu:0～6.8%.
2. aluminium alloy as claimed in claim 1 is characterized in that: the mass percent that described Zr, Cr and Y or Sm account for alloy is respectively: Zr:0.02～0.35%; Cr:0.04～0.5%; Y:0.02～0.45%; Sm:0.03～0.46%.
3. aluminium alloy as claimed in claim 1 or 2 is characterized in that: described aluminium alloy also comprises Mn, Ti, and the mass percent that described Mn, Ti account for alloy is: Mn:0～0.5%; Ti:0～0.1%.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100351101A CN101323923A (en) | 2007-06-12 | 2007-06-12 | Yttrium or samarium containing anti-recrystallizing corrosion resistant aluminum alloy |
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| CNA2007100351101A CN101323923A (en) | 2007-06-12 | 2007-06-12 | Yttrium or samarium containing anti-recrystallizing corrosion resistant aluminum alloy |
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| CN101323923A true CN101323923A (en) | 2008-12-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828075A (en) * | 2012-08-17 | 2012-12-19 | 南昌大学 | Al-Cu-Sm rare earth cast aluminium alloy and preparation method thereof |
| CN103175831A (en) * | 2011-12-22 | 2013-06-26 | 北京有色金属研究总院 | Method suitable for analysis and evaluation of recrystallization texture ratio of deformed aluminum alloy material |
| CN114774724A (en) * | 2022-03-30 | 2022-07-22 | 山东南山铝业股份有限公司 | High-strength deformation rare earth aluminum alloy and preparation method thereof |
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2007
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175831A (en) * | 2011-12-22 | 2013-06-26 | 北京有色金属研究总院 | Method suitable for analysis and evaluation of recrystallization texture ratio of deformed aluminum alloy material |
| CN103175831B (en) * | 2011-12-22 | 2016-03-30 | 北京有色金属研究总院 | A kind of method being suitable for wrought aluminium alloy material re-crystallizes and organizing proportion grading to evaluate |
| CN102828075A (en) * | 2012-08-17 | 2012-12-19 | 南昌大学 | Al-Cu-Sm rare earth cast aluminium alloy and preparation method thereof |
| CN102828075B (en) * | 2012-08-17 | 2014-02-26 | 南昌大学 | Al-Cu-Sm rare earth cast aluminium alloy and preparation method thereof |
| CN114774724A (en) * | 2022-03-30 | 2022-07-22 | 山东南山铝业股份有限公司 | High-strength deformation rare earth aluminum alloy and preparation method thereof |
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