摘要
本文研究了母相晶粒度和有序度对Cu-25.62Zn-3.97Al-0.0018B(wt-％)记忆合金形状回复的影响。试样的回复量通过圆弧弯曲法测定。建立了回复率与有序度、晶粒尺寸、晶界影响区宽度、试样变形时的应力和临界切应力之间的数学关系。形状记忆效应随晶粒尺寸变化出现极大值,随有序参数增大而线性上升,与试验结果相符。
Influence of the grain size and ordering degree of the parent phase on
the shape memory recovery in a Cu-25.62 Zn-3.97 Al-0.0018B (wt-%) memory alloy
is investigated. A mathematical relationship is set up between the recovery ratio and
ordering degree, probability of atoms at their ordered sites, grain size, the width
of the grain boundary affected regions, the stress during deformation, as well as the
critical shear stress. Shape memory effect reaches a maximum with varying grain
size and increases linearly with increasing ordering parameter, that agrees well with
experimental results.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1989年第3期A173-A178,共6页
Acta Metallurgica Sinica
