中国有色金属学报(英文版)
中國有色金屬學報(英文版)
중국유색금속학보(영문판)
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2013年
7期
1882-1889
,共8页
Al-Mg-Si-Cu合金%再结晶%显微组织%力学性能
Al-Mg-Si-Cu閤金%再結晶%顯微組織%力學性能
Al-Mg-Si-Cu합금%재결정%현미조직%역학성능
Al-Mg-Si-Cu alloy%recrystallization%microstructure%mechanical property
研究微量Zr和Sc对Al?Mg?Si?Cu?Cr?V合金显微组织与力学性能的影响。结果表明:微量元素Zr和Sc对铸态晶粒细化、合金挤压态强度的提高以及对时效态合金中大角度晶界迁移的阻碍作用,由大到小依次为:Al3Sc>Al3(Zr,Sc)>Al3Zr。它们均无法阻止再结晶形核,但对于时效态合金,Al3(Zr,Sc)相对于位错运动的阻碍比Al3Sc相更为明显。与单一添加0.15% Sc合金的时效态进行比较,复合添加Zr和Sc仅会轻微降低合金的强度而对塑性没有影响。综合考虑合金生产成本以及对力学性能的轻微损害等因素,在Al?Mg?Si?Cu?Cr?V合金中复合添加0.13%Zr和0.03%Sc是替代0.15%Sc的最佳方式。
研究微量Zr和Sc對Al?Mg?Si?Cu?Cr?V閤金顯微組織與力學性能的影響。結果錶明:微量元素Zr和Sc對鑄態晶粒細化、閤金擠壓態彊度的提高以及對時效態閤金中大角度晶界遷移的阻礙作用,由大到小依次為:Al3Sc>Al3(Zr,Sc)>Al3Zr。它們均無法阻止再結晶形覈,但對于時效態閤金,Al3(Zr,Sc)相對于位錯運動的阻礙比Al3Sc相更為明顯。與單一添加0.15% Sc閤金的時效態進行比較,複閤添加Zr和Sc僅會輕微降低閤金的彊度而對塑性沒有影響。綜閤攷慮閤金生產成本以及對力學性能的輕微損害等因素,在Al?Mg?Si?Cu?Cr?V閤金中複閤添加0.13%Zr和0.03%Sc是替代0.15%Sc的最佳方式。
연구미량Zr화Sc대Al?Mg?Si?Cu?Cr?V합금현미조직여역학성능적영향。결과표명:미량원소Zr화Sc대주태정립세화、합금제압태강도적제고이급대시효태합금중대각도정계천이적조애작용,유대도소의차위:Al3Sc>Al3(Zr,Sc)>Al3Zr。타문균무법조지재결정형핵,단대우시효태합금,Al3(Zr,Sc)상대우위착운동적조애비Al3Sc상경위명현。여단일첨가0.15% Sc합금적시효태진행비교,복합첨가Zr화Sc부회경미강저합금적강도이대소성몰유영향。종합고필합금생산성본이급대역학성능적경미손해등인소,재Al?Mg?Si?Cu?Cr?V합금중복합첨가0.13%Zr화0.03%Sc시체대0.15%Sc적최가방식。
The effects of minor contents of Zr and Sc on the microstructures and mechanical properties of Al?Mg?Si?Cu?Cr?V alloy were studied. The results show that the effects of minor Zr and Sc on the as-cast grain refinement in the ingots, the improvement in the strength of the as-extruded alloys and the restriction of high angle grain boundaries in the aged alloys can be sorted as Al3Sc>Al3(Zr,Sc)>Al3Zr. None of them could stop the nucleation of recrystallization, but Al3(Zr,Sc) phase is a more effective inhibitor of dislocation movement compared to Al3Sc in the aged alloys. Compared with the mechanical properties of the aged alloy added only 0.15%Sc, the joint addition of Zr and Sc to the alloy leads to a very slight decrease in strength with even no cost of ductility. Taking both the production cost and the little bad influence on mechanical properties into consideration, an optimal content of Zr and Sc in the Al?Mg?Si?Cu?Cr?V alloy to substitute 0.15%Sc is 0.13%Zr+0.03%Sc.