FeMnNi合金冲击相变与卸载逆相变历程研究

陈永涛; 李庆忠; 唐小军; 刘文韬

doi:10.11858/gywlxb.2011.02.011

FeMnNi合金冲击相变与卸载逆相变历程研究

doi: 10.11858/gywlxb.2011.02.011

1.
中国工程物理研究院流体物理研究所，冲击波物理与爆轰波物理国防科技重点实验室，四川绵阳 621900；
2.
北京应用物理与计算数学研究所，北京 100094

详细信息

通讯作者:
陈永涛

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出版历程
- 收稿日期: 2009-09-02
- 修回日期: 2009-12-15
- 发布日期: 2011-04-15

Phase Transition and Reverse Transition in FeMnNi Alloy

1.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China;
2.
Beijing Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

More Information

Corresponding author: CHEN Yong-Tao

摘要

摘要: 采用VISAR测试技术，将正向加载和逆向加载实验相结合，研究了不同加载压力下FeMnNi合金的冲击相变和卸载逆相变历程。结果表明：冲击加载压力与冲击相变阈值之差小于逆相变阈值时，即0p-tn，FeMnNi合金发生相变，加载段呈现弹性波、塑性波和相变波三波结构，塑性波在自由面反射稀疏波使FeMnNi合金完成逆相变，卸载段呈现稀疏波、稀疏冲击波和稀疏波三波结构；p-tn时，加载段呈现弹性波、塑性波、相变波和相界面反射压缩波的四波结构，卸载过程中相变波反射稀疏波使FeMnNi合金完成逆相变，卸载段呈现稀疏波和稀疏冲击波的两波结构。
- 固体力学 /
- FeMnNi /
- 相变 /
- 逆相变
Abstract: By means of VISAR, the phase transition and reverse phase transition in FeMnNi alloy under different pressures were studied through direct impact and reverse impact experiments. As the difference between shock pressure and phase transition threshold is larger than reverse transition threshold, namely 0p-tn, it may lead to an occurrence of the phase transition in FeMnNi alloy, and produces a multi-wave structure consisting of an elastic wave, a plastic wave and a phase transition wave. Under the release process, the rarefaction wave reflecting by the plastic wave from the free surface induces the complete reverse phase transition , and forms a multi-wave structure comprising a rarefaction wave, a rarefaction shock wave and another rarefaction wave. As p-tn, it may produce a multi-wave structure with phase interface reflection (PIR) wave. During the release process, the rarefaction wave reflecting by the residual phase wave causes the reverse phase transition , and forms a two-wave structure consisting of a rarefaction wave and a rarefaction shock wave.
- solid mechanics /
- FeMnNi alloy /
- phase transition /
- reverse phase transition

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参考文献(9)

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