C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/30, 148/31,
C21D 8/00 (2006.01) C22F 1/10 (2006.01) C22F 1/18 (2006.01) B21B 1/02 (2006.01) B21B 1/18 (2006.01) B21B 3/00 (2006.01) B21B 45/00 (2006.01)
Patent
CA 2004548
A method for producing a metallic material having an ultra-fine microstructure, the metallic material exhibiting a phase transformation of a low-temperature phase into a high- temperature phase is disclosed, the method comprising the steps of: preparing a metallic material which comprises at least a low-temperature phase; applying plastic deformation to the metallic material; and increasing the temperature of the metallic material to a point beyond a transformation point while applying the plastic deformation to effect reverse transformation of the low- temperature phase into a high-temperature phase.
Aihara Kenji
Hagita Hyoji
Hayashi Chihiro
Murai Nobuhiro
Tsukamoto Takashi
Osler Hoskin & Harcourt Llp
Sumitomo Metal Industries Ltd.
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