Be、Ni元素对Cu-Al系形状记忆合金性能的影响研究  

A study on performance’s influence of Be and Ni to Cu-Al shape memory alloy

作　　者：徐华苹[1] 宋高峰[1] 毛协民[1] 

机构地区：[1]上海大学材料学院,上海200072

出　　处：《功能材料》2009年第11期1853-1856,共4页Journal of Functional Materials

摘　　要：利用Bridgemen定向凝固炉制备了不同成分的Cu-Al系形状记忆合金单晶。并对其形状记忆特性进行了系统分析。结果表明,Be元素与Ni元素同时添加的Cu-Al-Ni-Be形状记忆合金单晶具有比单独添加Be元素或Ni元素的合金单晶更优越的性能。Ni与Be元素的同时加入导致固溶淬火组织的变化,对改善合金形状记忆性能起了交互加强的作用。With Bridgemen directional solidification method the single crystal alloys of CuAl based shape memory alloy（SMA） with different components were prepared. And their shape memory performance characters were systematically investigated. The results show that the single crystal of CuAlNiBe quaternary shape memory alloy has much better shape memory properties than that of the CuAlBe and CuAlNi ternary alloy. That means that in the CuAl based SMA alloy the mixed addition of Be and Ni changed the quenching microstructure has a strengthening effect to improve the shape memory performance of the SMA alloy.

关 键 词：Cu-Al-Ni-Be合金 形状记忆合金 相变点 冷热循环疲劳特性 最大可恢复应变 

分 类 号：TG139.6[一般工业技术—材料科学与工程]