US 12,064,814 B2
Method for manufacturing αFe—SiC composite material, and αFe—SiC composite material
Kenjiro Sugio, Hiroshima (JP); Takuya Takahashi, Hiroshima (JP); Hitoshi Sawada, Hiroshima (JP); Gen Sasaki, Hiroshima (JP); Kazuhiro Matsugi, Hiroshima (JP); Yongbum Choi, Hiroshima (JP); Zhefeng Xu, Hiroshima (JP); Hajime Suetsugu, Hiroshima (JP); Hiroki Kondo, Hiroshima (JP); Hideki Manabe, Hiroshima (JP); Kyotaro Yamane, Hiroshima (JP); Kenichi Hatakeyama, Hiroshima (JP); Keizo Kawasaki, Hiroshima (JP); Tsuyoshi Itaoka, Hiroshima (JP); Shinsaku Seno, Hiroshima (JP); Yasushi Tamura, Tokyo (JP); Ichirou Ino, Hiroshima (JP); and Yoshihide Hirao, Hiroshima (JP)
Assigned to HIROSHIMA UNIVERSITY, Hiroshima (JP); Y-tec Corporation, Hiroshima (JP); KEYLEX CORPORATION, Hiroshima (JP); and Mazda Motor Corporation, Hiroshima (JP)
Appl. No. 17/266,371
Filed by HIROSHIMA UNIVERSITY, Hiroshima (JP); Y-tec Corporation, Hiroshima (JP); KEYLEX CORPORATION, Hiroshima (JP); and Mazda Motor Corporation, Hiroshima (JP)
PCT Filed Jul. 9, 2019, PCT No. PCT/JP2019/027083
§ 371(c)(1), (2) Date Feb. 5, 2021,
PCT Pub. No. WO2020/031585, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 2018-148884 (JP), filed on Aug. 7, 2018.
Prior Publication US 2021/0316361 A1, Oct. 14, 2021
Int. Cl. B22F 3/105 (2006.01); C21D 6/00 (2006.01); C21D 7/13 (2006.01); C22C 33/02 (2006.01); C22C 38/02 (2006.01)
CPC B22F 3/105 (2013.01) [C21D 6/008 (2013.01); C21D 7/13 (2013.01); C22C 33/02 (2013.01); C22C 38/02 (2013.01); C21D 2211/001 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of producing an α-Fe—SiC composite, comprising:
an alloy preparation step comprising preparing an alloy which is a solid solution containing α-Fe as a solvent and at least one type of α-phase stabilizing element as a solute;
a first mixing step comprising mixing at least one type of α-phase stabilizing element in powder form and SiC to prepare a first mixture;
a second mixing step comprising mixing the alloy and the first mixture to prepare a second mixture, the second mixture prepared in the second mixing step containing the at least one type of α-phase stabilizing element in an amount of not less than 15.0 at. % and not more than 20 at. % relative to Fe contained in the α-Fe—SiC composite, the second mixture containing, as at least part of the at least one type of α-phase stabilizing element, Ti in an amount of not less than 8.0 at. % relative to Fe contained in the α-Fe—SiC composite; and
a sintering step comprising sintering the second mixture.