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Chinese Journal of High Pressure Physics  > 2010  >  24(2): 107-112 .
LI Qing-Zhong, CHEN Yong-Tao, HU Hai-Bo, XU Yong-Bo. Experimental Study on Phase Transition and Spall Fracture in FeMnNi Alloy under Shock Pressure[J]. Chinese Journal of High Pressure Physics, 2010, 24(2): 107-112 . doi: 10.11858/gywlxb.2010.02.005
Citation: LI Qing-Zhong, CHEN Yong-Tao, HU Hai-Bo, XU Yong-Bo. Experimental Study on Phase Transition and Spall Fracture in FeMnNi Alloy under Shock Pressure[J]. Chinese Journal of High Pressure Physics, 2010, 24(2): 107-112 . doi: 10.11858/gywlxb.2010.02.005
shu

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

doi: 10.11858/gywlxb.2010.02.005
  • 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
  • Received Date: 14 Apr 2009
  • Rev Recd Date: 28 Aug 2009
  • Publish Date: 15 Apr 2010
    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.

     

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