Cu-Zn-Al合金形状记忆效应的机理分析  

The Mechanism Analysis on the Shape Memory Effect of Cu-Zn-Al Alloy

作　　者：解光亮[1] 丁秀香[1] 杨红[2] 

机构地区：[1]山西大学物理系,山西太原030006 [2]无锡怀仁中学,江苏无锡214194

出　　处：《山西大学学报（自然科学版）》2003年第2期147-149,共3页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省青年科学基金 ( 2 0 0 0 10 0 2 )

摘　　要：在相变过程中产生的热弹性马氏体所具有的晶体学可逆性和其形成过程中的自协作效应与取向效应是形状记忆合金产生形状记忆的根本原因 ,据此对 Cu- Zn- Al形状记忆合金观测结果给出了解释 .文中还阐明了发生热弹性马氏体相变的驱动力来自母相与新相间的自由能差 ,热弹性马氏体的形状。The mechanism of Cu-Zn-Al alloy's shape memory effect was studied by the thermodynamic theory of martensite transformation.The essential reasons of the shape memory effect(SME) are the crystallographic reversibility of thermal-elastic martensite.The result of observation of Cu-Zn-Al shape memory alloy is explained.It is showed that the drive-force of produced-thermal-elastic martensite are controlled by the super-cooling degree of phase transformation.

关 键 词：CU-ZN-AL合金 形状记忆效应 形状记忆合金 热弹性马氏体 自协作效应 取向效应 

分 类 号：TG139.6[一般工业技术—材料科学与工程]