摘要
本文探讨了Mn、Ti、V、Zr等合金元素对铝合金冲击韧性的影响规律 ,初步讨论了冲击韧性与强度、伸长率间的关系。以Al Cu Mn合金为基 ,用Ti、Zr、V、B等微量合金化元素对其强化 ,并调整热处理制度 ,制成一种高强度、高韧性的铸造铝合金。通过系统试验 ,确定该高强韧铸造铝合金的成分 (质量分数 ,% )如下 :4 6~ 5 3Cu ,0 3~0 5Mn ,0 0 5~ 0 2 5Ti,0 0 5~ 0 2 5Zr,0 1~ 0 2 5V ,0 0 5~ 0 1B。该合金在金属型铸造 ,经不同时效时间T5处理后的性能为 :σb385~ 4 0 5MPa ,σ0 2 2 2 2~ 2 4 2MPa ,δ519%~ 2 3% ,aK181~ 30 4kJ/m2 。
The effects of Mn,Ti,V,Zr on the toughness and the relations of toughness with strength and elongation are discussed and one cast aluminum alloy with high strength and toughness is obtained,reinforced with Ti,Zr,V,B,based on Al Cu Mn alloy in this paper.By a systematic study,the composition of this alloy can be attached:4 6~5 3Cu,0 3~0 5Mn,0 05~0 25Ti,0 05~0 25Zr,0 1~0 25V,0 05~0 1B.The mechanical properties are:σ b 385~405MPa,σ 0 2 222~242MPa,δ 519%~23%,a K181~304kJ/m\+2 at T5 condition,after metal mold casting.
出处
《铸造》
CAS
CSCD
北大核心
2000年第2期66-69,共4页
Foundry
关键词
铸造铝合金
高强度铝合金
铝合金
铸造
cast aluminum alloy
high strength aluminum alloy
high toughness aluminum alloy
chemical composition
mechanical properties
alloying with trace elements