摘要
变形诱发晶粒长大是超塑性变形组织变化的重要特征．基于超塑性晶粒长大全微分为晶粒换位微观纯变形和晶粒微观静态长大偏微分之和的思想，获得了修正的Campenni变形诱发晶粒长大模型和新展开的晶粒长大速率模型模型预报的规律已为超塑性Mg－8．4Li（质量分数，％）合金晶粒长大实验规律所证实。
Deformation induced grain growth (DIGG) is an important characteristics of micro-deformation evolution during superplastic deformation. Based on the idea that full differential of superplastic grain growth is the partial sum of net micro-deformation deformation of grain switching and static growth of grain, a modified model of Campenni DIGG model and a newly extended grain growth rate model have been obtained. Model predictions are proved by experimental evidence of DIGG in superplastic Mg-8.4Li alloy.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第7期770-772,共3页
Acta Metallurgica Sinica
基金
国家教委博士点基金!9314515
关键词
超塑性
晶粒长大模型
变形
镁锂合金
superplasticity
grain growth
model
deformation
Mg-Li alloy
