合金成分对Cu-Zn-Al形状记忆合金相变性能的影响
Effect of Alloy Composition on Phase Transition Properties of Cu-Zn-Al Shape Memory Alloy
柳月静, 陈忠家, 刘晓燕, 黄丹彤
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作者单位：(合肥工业大学 材料科学与工程学院, 安徽 合肥 230009)
中文关键字：形状记忆效应； Cu-Zn-Al； Zr； 回复率； 相变温度
英文关键字：shape memory effects; Cu-Zn-Al; Zr; recovery rate; phase transition temperature
中文摘要：分别对不含Zr、含0.1Zr和0.2Zr(wt%)的三种合金进行显微组织观察，回复率测试，相变温度测试以及X射线衍射分析等。结果表明，Zr能起到细化晶粒的作用；Zr的加入可以降低合金的相变温度；同时，在一定范围内，Zr的加入能增大合金的记忆回复率，但当超过某一值时，回复率反而减小；三种合金在850 ℃固溶后，仍会残留少部分母相。
英文摘要：The influences of Zr on the microstructure and properties of Cu-Zn-Al alloy with three different composition(no Zr, 0.1Zr and 0.2Zr (wt%)) were studied. The experiments of microstructure, recovery rate, phase transition temperature and X-ray diffraction analysis were carried out. The results show that Zr can refine the grain and reduce the phase transition temperature. In a certain range, Zr can increase the recovery rate; but when it reaches a certain content, the recovery rate decreases again. Under the solution treatment of 850 ℃, there are a few remained parent phases.