摘要
研究了Ａｌ－Ｌｉ单晶体在不同温度和应变速率范围内产生的锯齿流变及其形态特征．开始产生锯齿流变的临界应变随着温度的升高（或应变速率的降低）先减小再增加．锯齿频率和应力变化幅度受温度和应变速率的影响，但不随应变单调变化．
The serration flow and its morphology of Al-Li single crystal were investigated under different temperatures(T) and strain rates(ε). The critical strain of serration(εc) first increased and then decreased with increasing T or decreasing ε. Temperature and strain rate have some influences on the frequency and amplitude of serration which changed irregularly with deformation. The relations between the type of the serration and the mechanisms for the occurrence of serration, and the changes of frequency and amplitude were obscure in the Al-Li single crystal.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第3期249-253,共5页
Acta Metallurgica Sinica
基金
国家自然科学基金
航空基金
关键词
锯齿流变
锯齿频率
锯齿幅度
铝锂合金
单晶体
serrated flow, serrated frequency, serrated amplitude, Al-Li single crystal
