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Defect structures and phase transitions of FeRh alloys deformed at high speed deformation |
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| Authors: | Ryuichiro Oshima Fuminobu Hori Yasunori Kibata Masao Komatsu Michio Kiritani |
| Affiliation: | a Research Institute for Advanced Science and Technology, Osaka Prefecture University, Sakai 599-8570, Japan b Research Center for Ultra-High-Speed Plastic Deformation, Hiroshima Institute of Technology, 2-1-1 Miyake, Saekiku, Hiroshima 731-5143, Japan |
| Abstract: | Fe–Rh alloys of Rh concentrations ranging from 40 to 50at.% and of B2 phase were deformed by use of a compression machine capable of running tests at high speeds of impact. Induced complicated substructures and phases were examined by X-ray diffraction (XRD), transmission electron microscopy (TEM), and positron annihilation spectroscopy (PAS). A characteristic arrangement of L10 domains was observed, along with very small transformed A1 domains and dispersed in the residual B2 matrix. On the basis of the experimental results, we suggest a coupling of a pair of shears along {112}11−1B2 for the transformation mechanisms from B2 to L10 and A1 phases. |
| Keywords: | Iron–rhodium alloy Stress-induced phase transition High-speed impact compression Transmission electron microscopy Positron annihilation |
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