冲击加载下FeMnNi合金相变和层裂特性实验研究

李庆忠; 陈永涛; 胡海波; 徐永波

doi:10.11858/gywlxb.2010.02.005

冲击加载下FeMnNi合金相变和层裂特性实验研究

doi: 10.11858/gywlxb.2010.02.005

1.
中国工程物理研究院流体物理研究所，冲击波物理与爆轰物理国防科技重点实验室，四川绵阳 621900；
2.
中国科学院金属研究所，材料科学国家重点实验室，辽宁沈阳 110016

详细信息

通讯作者:
李庆忠

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出版历程
- 收稿日期: 2009-04-14
- 修回日期: 2009-08-28
- 发布日期: 2010-04-15

Experimental Study on Phase Transition and Spall Fracture in FeMnNi Alloy under Shock Pressure

1.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China;
2.
National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

More Information

Corresponding author: LI Qing-Zhong

摘要

摘要: 采用激光速度干涉仪（VISAR）、X射线衍射（XRD）和扫描电镜（SEM）联合测试技术，利用等厚对称加载和逆向加载实验，研究了FeMnNi合金的冲击相变和层裂行为。结果发现：加载压力大于6.5 GPa时，FeMnNi合金样品发生相变；中心稀疏波的卸载作用使内压力降至4～5 GPa时，FeMnNi合金样品发生逆相变，并伴有卸载稀疏冲击波形成。分析FeMnNi合金样品中塑性波、相变波、稀疏波和稀疏冲击波的传播作用过程，发现加载压力大于其相变应力时，等厚对称加载下FeMnNi合金存在产生层裂行为的物理机制。
- FeMnNi合金 /
- 相变 /
- 逆相变 /
- 层裂 /
- 稀疏冲击波
Abstract: By means of velocity interferometer system for any reflector (VISAR), X-ray diffraction (XRD) and scanning electron microscope (SEM), phase transition and spalling behavior of the FeMnNi alloy were studied through symmetric impact and reverse impact experiments. The FeMnNi alloy experiences a phase transformation when shocked to the pressure above 6.5 GPa. The FeMnNi alloy produces reverse phase transition and rarefaction shock wave when the pressure reduce to 4～5 GPa due to the rarefaction wave. By analyzing the interaction among plastic wave, phase transition wave, rarefaction wave and rarefaction shock wave, it was found that the FeMnNi alloy has a physical mechanism inducing the formation of spall behavior in symmetric impact experiments as the impact stress exceeds transition threshold.
- FeMnNi alloy /
- phase transition /
- reverse transition /
- spall /
- rarefaction shock wave

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参考文献(10)

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