Title:
TITANIUM-BASED ALLOY MEMBER, METHOD FOR PRODUCING TITANIUM-BASED ALLOY MEMBER, AND PRODUCT IN WHICH TITANIUM-BASED ALLOY MEMBER IS USED
Document Type and Number:
WIPO Patent Application WO/2019/074059
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a heat-resistant titanium alloy member having high mechanical strength and high oxidation resistance at high temperatures, the titanium alloy member having low mechanical anisotropy; a method for producing the titanium alloy member; and a product in which the alloy member is used. The titanium-based alloy member according to the present invention has titanium (Ti) as a primary element, includes at least 0.5-2.0 mass% of boron (B), and is configured such that fibrous TiB particles are dispersed and deposited in a polycrystalline parent phase, wherein the titanium (Ti)-based alloy member is characterized in that the TiB particles include a long axis of 1-10 μm and a short axis of 0.01-0.5 μm, have an aspect ratio of 2-1000, and are deposited in the crystal grains of the parent phase in a direction that is crystallographically random.
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Inventors:
FUJIEDA TADASHI (JP)
KUWABARA KOUSUKE (JP)
OONUMA ATSUHIKO (JP)
CHIBA AKIHIKO (JP)
KOIZUMI YUICHIRO (JP)
YAMANAKA KENTA (JP)
KUWABARA KOUSUKE (JP)
OONUMA ATSUHIKO (JP)
CHIBA AKIHIKO (JP)
KOIZUMI YUICHIRO (JP)
YAMANAKA KENTA (JP)
Application Number:
PCT/JP2018/037924
Publication Date:
April 18, 2019
Filing Date:
October 11, 2018
Export Citation:
Assignee:
HITACHI LTD (JP)
UNIV TOHOKU (JP)
UNIV TOHOKU (JP)
International Classes:
C22C14/00; B22F3/10; B22F3/105; B22F3/16; B22F3/24; B22F9/08; B33Y70/00; B33Y80/00; F01D5/28; F01D25/00; F02C7/00; F04D29/02; F04D29/38
Domestic Patent References:
| WO2017138191A1 | 2017-08-17 |
Foreign References:
| JP2016053198A | 2016-04-14 | |||
| JP2013019054A | 2013-01-31 | |||
| JP2014040674A | 2014-03-06 | |||
| JP2008196367A | 2008-08-28 | |||
| JP2014040674A | 2014-03-06 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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