Title:
TITANIUM ALLOY BAR AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2002/070763
Kind Code:
A1
Abstract:
An $g(a) + $g(b) type titanium alloy bar which has a substantial chemical composition in mass %: Al: 4 to 5 %, V: 2.5 to 3.5 %, Fe: 1.5 to 2.5 %, Mo: 1.5 to 2.5 % and balance: Ti, and a structure wherein a pro-eutectoid a phase accounts for a volume percentage of 10 % to 90 %, has an average crystal grain size of 10 $g(m)m or less, and exhibits an aspect ratio of a grain of 4 or less in the cross section parallel to the rolling direction. The $g(a) + $g(b) type titanium alloy bar is excellent in ductility, fatigue characteristics and formability.
Inventors:
FUKAI HIDEAKI (JP)
OGAWA ATSUSHI (JP)
MINAKAWA KUNINORI (JP)
OGAWA ATSUSHI (JP)
MINAKAWA KUNINORI (JP)
Application Number:
PCT/JP2002/001710
Publication Date:
September 12, 2002
Filing Date:
February 26, 2002
Export Citation:
Assignee:
NIPPON KOKAN KK (JP)
FUKAI HIDEAKI (JP)
OGAWA ATSUSHI (JP)
MINAKAWA KUNINORI (JP)
FUKAI HIDEAKI (JP)
OGAWA ATSUSHI (JP)
MINAKAWA KUNINORI (JP)
International Classes:
B21B3/00; C22C14/00; C22F1/18; (IPC1-7): C22C14/00; B21B3/00; C22F1/18
Foreign References:
| JPH10306335A | 1998-11-17 | |||
| JPS5825465A | 1983-02-15 | |||
| JPH08103831A | 1996-04-23 | |||
| JPH05295502A | 1993-11-09 |
Other References:
See also references of EP 1382695A4
Attorney, Agent or Firm:
Ochiai, Kenichiro c/o Intellectual Property Department JFE Steel Corporation 2-3 (Uchisaiwai-cho 2-chome Chiyoda-ku Tokyo, JP)
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