晶粒细化对Cu-12.2Al-4.0Mn形状记忆合金加工性能的影响

来源期刊：中国有色金属学报1999年第3期

论文作者：娄明珠 阎晓东 王碧文 李红 王世民 王涛

文章页码：552 - 555

关键词：铜基形状记忆合金；塑性图；加工性能

Key words：copper base shape memory alloy; plastic diagram; workability

摘    要：测定了Cu-12.2Al-4.0Mn形状记忆合金的塑性图，研究了微量元素Ni，Co和B对合金的显微组织和加工性能的影响。结果表明：1）试验合金在700℃～800 ℃高温β 相状态下具有非常好的塑性加工性能，而在室温则呈脆性断裂；2）试验合金中加入少量的（Ni＋B＋Co），可以细化合金的晶粒，提高合金的冷加工性能；3)采用有利发挥合金塑性的加工方法，则能提高该合金的冷加工性能。

Abstract: A plastic graph was surveyed and the effect of trace elements such as Ni, B and Co on microstructures and working properties of Cu -12.2Al-4.0Mn shape memory alloy was studied. The test results are as follows: 1)The alloy possesses excellent plastic working properties in β phase state at 700～800 ℃, but it occurs brittle breakdown at room temperature; 2 ) Grain was refined and cold workability increased with adding trace elements such as (Ni+B+Co) into the alloy; 3) When the process of favorable heightening technical plasticity of alloy is selected, the cold working performance of the alloy will be enhanced.