Mazda Motor Corporation

Hiroshima University

Keylex Corporation

Y-tec Corporation

Yoshihide Hirao

Ichirou Ino

Keizo Kawasaki

Naoyuki Irie

Chie Okawa

Kenichi Hatakeyama

Yasushi Tamura

Kazuhiro Matsugi

Gen Sasaki

Tsuyoshi Itaoka

Zhefeng Xu

Shinsaku Seno

Kyotaro Yamane

Hideki Manabe

Hiroki Kondo

Yongbum Choi

Kenjiro Sugio

Hajime Suetsugu

Yujiao Ke

Takuya Takahashi

Hitoshi Sawada

Provided is a method of producing a composite having high strength and high thermal conductivity. The method includes: an alloy preparation step including 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 including mixing at least one type of α-phase stabilizing element in powder form and SiC to prepare a first mixture; a second mixing step including mixing the alloy and the first mixture to prepare a second mixture; and a sintering step including sintering the second mixture.

Method for manufacturing αFe—SiC composite material, and αFe—SiC composite material

A hot press processing deviceincludes steps of: a heating step of heating a workpiece W; a press step of press-molding the workpiece W heated in the heating step; a cooling step of cooling a part of the workpiece W press-molded in the press step and causing it to undergo martensite transformation to form a hard zone Zh in the workpiece W, and cooling another part of the workpiece W and causing it to undergo ferrite/bainite transformation to form a soft zone Zs in the workpiece W. In the cooling step, the hot press processing devicecools a predetermined portion Zb in the soft zone Zs after increasing rigidity and hardness of the predetermined portion Zb.

Hot press processing method and processing device

Provided is a Fe-based sintered body which has both of a high hardness and a high thermal conductivity and which can be more stably produced. The Fe-based sintered body includes: a matrix () containing Fe as a main component; and a hard phase () dispersed in the matrix (). The matrix () is formed in a network shape and contains αFe. The hard phase () contains TiC.

Fe-based sintered body, Fe-based sintered body production method, and hot-pressing die

A hot press processing apparatusincludes: a heating step of heating a workpiece W; a pressing step of press-molding, by an upper dieand a lower die, the workpiece W heated in the heating step after loading the workpiece W between the upper dieand the lower die; and a cooling step of bringing the coolant into contact with a front surface of the workpiece W that is molded and placed in a pressed state by the pressing step, to thereby cool the workpiece W and place the workpiece W in a quenched state. In the hot press processing apparatus, the workpiece W molded and placed in the pressed state by the pressing step forms gaps cwith respect to both of the upper dieand the lower dieso as to allow deformation at time of the cooling step except for an accuracy-guaranteed section Wr in the workpiece W.

Hot press processing method and hot press processing apparatus

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Hiroshima, Japan

Yoshihide Hirao