淬火CuZnAl合金的正电子湮没寿命谱  

The Analysis of Positron Lifetime Spectra for Quenched CuZnAl Alloy

作　　者：王景成 尤富强 

出　　处：《上海钢研》1998年第1期32-35,共4页Journal of Shanghai Iron and Steel Research

摘　　要：本文分析了900℃、750℃和700℃淬火后Cu-23at.％Zn-10at.％Al合金试样的正电子湮没寿命谱,其中长寿τ_2始终维持在185ps左右的数值,表明该合金淬火后保留有大量的单空位,母相态下尽快消除这些空位有助于避免和改善铜基形状记忆合金的热弹马氏体稳定化现象。The lifetime spectra of positron have been studied for the Cu - 23at%Zn - 10at.%Al shape memory alloy quenched from 700℃, 750℃, and 900℃. It is shown that the longer lifetime τ2 kept unchanged, indicating that the alloy inherited a large number of mono - vacancies after quenching. The recovery of the mono - vacancies in parent phase is able to avoid stabilization of thermoelastic martensite in CuZnAl alloy.

关 键 词：正电子湮没 形状记忆合金 铜基合金 淬火 

分 类 号：TG139.6[一般工业技术—材料科学与工程] TG146.11[金属学及工艺—合金]