物理学报2011，Vol.60Issue(4)：486-494,9.
Fe基α相合金的冲击相变及其对层裂行为的影响研究
Phase transition and influence of phase transition on spall in α phase Fe-based alloy
摘要
Abstract
This paper provides an investigation of the phase transition and the spalling characteristics induced during shock loading and unloading in an a phase Fe-based alloy. Two kinds of impact set-ups are used. One is referred to as the direct impact, and the other is the reverse impact. The shock Hugoniot and the release stress-volume adiabat of the α phase Febased alloy are obtained. And the results show that the history of loading and unloading is determined by the relationship among the phase transition threshold and the reverse transition threshold and the shock pressure. It is found that abnormal spallations happen in the α phase Fe-based alloy sample as the pressure exceeds the phase transition threshold. Such abnormal spalling phenomena are believed to be related to the shocked α→ε phase transition, and a possible reason for the abnormal spalling is discussed also from the interaction process of stress wave.关键词
Fe基α相合金/相变/逆相变/层裂Key words
α phase Fe-based alloy/ phase transition/ reverse phase transition/ spall引用本文复制引用
陈永涛,唐小军,李庆忠..Fe基α相合金的冲击相变及其对层裂行为的影响研究[J].物理学报,2011,60(4):486-494,9.基金项目
国家自然科学基金(批准号:10902102),中国工程物理研究院科学发展基金(批准号:2009B0201014,20060104)资助的课题. （批准号:10902102）
