摘要
研究了温度在 - 10 0～ 4 0 0℃、应变率在 10 - 5～ 10 3/s范围内温度和应变率的变化对钽的流动应力的影响。结果表明 ,钽的流动应力对温度和应变率的变化相当敏感。同时还就两种本构模型对钽的温度效应与应变率效应的不同处理方法作了比较 ,指出Zerilli Armstrong模型能更好地描述温度与应变率对钽流动应力的影响。
The influence of temperature and strain rate on the flow stress of tantalum under temperature range from-100℃ to 400℃ and strain rate from 10 -5 /s to 5×10 3/s was studied.The results showed that the flow stress of tantalum was very sensitive to the changes of temperature and strain rate.Two theoretical methods were compared,and Zerilli Armstrong model was found to be more satisfactory to describe the dependence of the flow stress on temperature and strain rate.
出处
《高压物理学报》
CAS
CSCD
北大核心
2001年第2期146-150,共5页
Chinese Journal of High Pressure Physics
