FeMnNi合金冲击相变与卸载逆相变历程研究

Chinese Journal of High Pressure Physics(2011)

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Abstract
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0nσ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ε→α逆相变,卸载段呈现稀疏波和稀疏冲击波的两波结构。
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Key words
solid mechanics,phase transition,reverse phase transition,FeMnNi alloy
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