Chinese Journal of High Pressure Physics
|
2010, 24(2): 107-112
• •
Experimental Study on Phase Transition and SpallFracture in FeMnNi Alloy under Shock Pressure
Full
Qing-Zhong LI
1, Yong-Tao CHEN
1, Hai-Bo HU
1, Yong-Bo XU
2
Affiliations
- 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
LI Qing-Zhong (1972—), male, master, associate professor, major in explosion mechanics. E-mail: zhongli4909@163.com
About Author:
LI Qing-Zhong (1972—), male, master, associate professor, major in explosion mechanics. E-mail: zhongli4909@163.com
Published: 2010-04-15
Outline
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 α→ε phase transformation when shocked to the pressure above 6.5 GPa. The FeMnNi alloy produces ε→α 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 α→ε transition threshold.
FeMnNi alloy
/
phase transition
/
reverse transition
/
spall
/
rarefaction shock wave
李庆忠, 陈永涛, 胡海波, 徐永波.
冲击加载下FeMnNi合金相变和层裂特性实验研究.
高压物理学报,
2010
, 24
(2)
: 107
-112
.
Qing-Zhong LI, Yong-Tao CHEN, Hai-Bo HU, Yong-Bo XU.
Experimental Study on Phase Transition and SpallFracture in FeMnNi Alloy under Shock Pressure[J].
Chinese Journal of High Pressure Physics,
2010
, 24
(2)
: 107
-112
.
- China Academy of Engineering Physics Foundation(20060104; 2009B0201014)
- National Natural Science Foundation(10776032; 10902102)
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Year 2010 volume 24 Issue 2
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Article Info
- Receive Date:2009-04-14
- Online Date:2026-10-30
- Published:2010-04-15