The manufacturing method of the tungsten alloy containing transition metal carbide, and the tungsten alloy containing transition metal carbide

Japanese Patent JP5920793

B2

The present invention relates to the development of an alloy material with significantly improved low-temperature brittleness, recrystallization brittleness, and irradiation brittleness by the introduction of a recrystallization microstructure into an alloy, particularly a tungsten material, to significantly strengthen a weak grain boundary of the recrystallization microstructure. The present invention comprises the steps of: mechanically alloying at least one species selected from a group-IVA, VA, or VIA transition metal carbide and a metallic raw material; sintering base powders obtained through the mechanically alloying step, by using a hot isostatic press; and performing plastic deformation of at least 60% on the alloy obtained through the sintering step, at a strain rate between 10 -5 s -1 and 10 -2 S -1 and at a temperature between 500°C and 2,000°C. It is therefore possible to obtain an alloy material with significantly improved low-temperature brittleness, recrystallization brittleness, and irradiation brittleness.

Hiroaki Kurishita
Arakawa Hideo
Satoru Matsuo

JP2013526892A

May 18, 2016

July 27, 2012

Click for automatic bibliography generation  

Tohoku University

C22C1/04; B22F3/24; C22C27/04

JP8085840A
JP5279705A
JP5163505A
JP60002603A
JP62205202A

Kazuo Shigenobu
Hideo Shimizu
Yuichi Takagi
Ryoichi Mizobuchi
Hideki Akiba
Taeko Katata

Previous Patent: Molecule breast imaging device

Next Patent: CLOG PREVENTING DEVICE FOR WATER INLET COVER IN PROPELLER FOR SHIP