Abstract
The effect of electron irradiation on the phase transformation in binary Fe-Nd and ternary Fe-Nd-B alloys was investigated. Electron irradiation induced nano-crystallization of amorphous-to-crystal (A-C) transition was observed in several Fe-Nd-B metallic glasses. In Nd2Fe14B compound, solid-state amorphization (SSA) of crystal-to-amorphous (C-A) transition occurred under electron irradiation. With further irradiation, the amorphous phase obtained by SSA transformed to the nano-crystalline phase through irradiation induced crystallization, resulting in crystal-to-amorphous-to-crystal (C-A-C) transition. A-C, C-A and C-A-C transition were also observed in some ternary Fe-Nd-B and binary Fe-Nd alloys. The electron irradiation technique is effective for the formation and control of nano-crystalline structure through A-C transition of amorphous phase and/or C-A-C transition of metallic compounds. [doi:10.2320/matertrans.MJ200702]
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