Enhanced densification of porous nickel aluminide under shock compression
Yakushev V. V. 1, Utkin A. V. 1, Zhukov A. N. 1
1Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, Russia
Email: yakushev@ficp.ac.ru, utkin@icp.ac.ru, azhukov@icp.ac.ru

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Using a laser velocity interferometer, wave profiles were recorded in porous (porosity 30%) nickel aluminide samples. Data on shock compressibility were obtained. An abnormally high compaction was found, manifested in the intersection of Hugoniots of solid and porous samples at a pressure of 28 GPa, which indicates a phase transition. Keywords: shock waves, Hugoniot, phase transitions, laser Doppler interferometers, intermetallides.
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