Femtosecond Laser Driven Shock Quenching of the Nanocrystalline High-Pressure Phase of Iron

Abstract:

Quenching of the nanocrystalline high-pressure e phase of iron, which has not been observed under a conventional shock compression, was attained using a femtosecond laser. A small quantity of the g phase of iron also existed. We found that the e phase was induced by the shock itself but not the g phase. The g phase was suggested to be induced as an intermediate structure between the a-e transition. The femtosecond laser driven shock may have the potential to quench high-pressure phases which has not been attained using conventional methods.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 3475-3478
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.3475
• Online since: January 2005
• Authors: Tomokazu Sano, Hiroaki Mori, Osamu Sakata, Etsuji Ohmura, Isamu Miyamoto, Akio Hirose, Kojiro F. Kobayashi
• Keywords: Femtosecond Laser, High Pressure Phase, Iron, Quenching

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