真空退火态钨合金的动态力学性态及其本构关系DYNAMIC BEHAVIOUR AND CONSTITUTIVE RELATION OF 93W TUNGSTEN-ALLOY WITH VACUUM-ANNEALED STATE
郑玉六,张宝(钅平),洪兵,刘长林,姜春兰
摘要(Abstract)：
借助于SHPB实验技术,对真空退火态93W材料在应变速率低于5000s~(-1)范围内的动态力学性态进行了实验研究。发现该材料对应变率具有明显可察觉的敏感性,其动态屈服限在所考察的应变率范围内提高了近一倍。温度从—50℃提高到200℃时,动态屈服限(ε=1100s~(1-))降低了约30％。基于塑性变形的位错动力学分析,建立了考虑应变率和温度效应及双相合金特点的动态本构关系,并对其应用可靠性进行了模拟计算分析。
关键词(KeyWords)： 钨合金力学性能;本构关系;应变率效应;温度软化效应
基金项目(Foundation):
作者(Author): 郑玉六,张宝(钅平),洪兵,刘长林,姜春兰
Email:
DOI: 10.14024/j.cnki.1004-244x.1993.05.004
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