Title:
METHOD FOR MANUFACTURING ALLOY CONTAINING TRANSITION METAL CARBIDE, TUNGSTEN ALLOY CONTAINING TRANSITION METAL CARBIDE, AND ALLOY MANUFACTURED BY SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2013/018714
Kind Code:
A1
Abstract:
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 ofa 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 10-5s-1 and 10-2s-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.
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Inventors:
KURISHITA HIROAKI (JP)
ARAKAWA HIDEO (JP)
MATSUO SATORU (JP)
ARAKAWA HIDEO (JP)
MATSUO SATORU (JP)
Application Number:
PCT/JP2012/069190
Publication Date:
February 07, 2013
Filing Date:
July 27, 2012
Export Citation:
Assignee:
UNIV TOHOKU (JP)
KURISHITA HIROAKI (JP)
ARAKAWA HIDEO (JP)
MATSUO SATORU (JP)
KURISHITA HIROAKI (JP)
ARAKAWA HIDEO (JP)
MATSUO SATORU (JP)
International Classes:
B22F3/24; B22F1/00; B22F3/15; C22C1/04; C22C27/04; C22F1/18; C22F1/00
Foreign References:
| JPH0885840A | 1996-04-02 | |||
| JPH05279705A | 1993-10-26 | |||
| JPH05163505A | 1993-06-29 | |||
| JPS602603A | 1985-01-08 | |||
| JPS62205202A | 1987-09-09 | |||
| JP2004279194A | 2004-10-07 | |||
| JP2001226735A | 2001-08-21 | |||
| JPH01502680A | 1989-09-14 | |||
| JPH0885840A | 1996-04-02 |
Other References:
COLLECTED ABSTRACTS OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, vol. 148, pages 235
COLLECTED ABSTRACTS OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, vol. 143, pages 322
T. KUWABARA; H. KURISHITA; M. HASEGAWA: "Development of an Ultra-Fine Grained V - 1.7 mass% Y alloy Dispersed with Yttrium Compounds Having Superior Ductility and High Strength", MATER. SCI. ENG. A, vol. 417, 2006, pages 16 - 23
See also references of EP 2737966A4
COLLECTED ABSTRACTS OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, vol. 143, pages 322
T. KUWABARA; H. KURISHITA; M. HASEGAWA: "Development of an Ultra-Fine Grained V - 1.7 mass% Y alloy Dispersed with Yttrium Compounds Having Superior Ductility and High Strength", MATER. SCI. ENG. A, vol. 417, 2006, pages 16 - 23
See also references of EP 2737966A4
Attorney, Agent or Firm:
SHIGENOBU Kazuo et al. (JP)
Shigenobu Kazuo (JP)
Shigenobu Kazuo (JP)
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