Title:
PRODUCTION OF TITANIUM ALLOY HAVING HIGH STRENGTH AND HIGH TOUGHNESS
Document Type and Number:
Japanese Patent JP3252596
Kind Code:
B2
Abstract:
PURPOSE: To produce a homogeneous titanium alloy in which the characteristics of near beta titanium alloy, high strength and high toughness, are well- balancedly improved and which has sufficient elongation.
CONSTITUTION: A near beta titanium alloy is subjected to isothermal forging at a temp. in the region between [beta transformation point -60°C] and [beta transformation point 10°C] at ≥30% draft, to solution treatment at a temp. in the region within the above temp. region and between [isothermal forging temp. -20°C] and [isothermal forging temp. +20°C] for ≥30min, and then to aging treatment at 400-600°C for ≥30min. By this method, the homogeneous titanium alloy having high strength and high toughness, in which 0.2% proof stress, elongation, and fracture toughness are regulated to ≥110kgf/mm2, ≥10%, and ≥180kgf/mm3/2, respectively, can be stably produced.
Inventors:
Hisashi Maeda
Minoru Okada
Yasuhiro Sato
Minoru Okada
Yasuhiro Sato
Application Number:
JP6800294A
Publication Date:
February 04, 2002
Filing Date:
March 11, 1994
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
C22F1/18; C22F1/00; (IPC1-7): C22F1/18
Domestic Patent References:
| JP457734B2 |
Other References:
【文献】材料とプロセス,Vol.2,No.2,p.326(1989)
【文献】材料とプロセス,Vol.3,No.5,p.1718(1990)
【文献】材料とプロセス,Vol.3,No.5,p.1718(1990)
Attorney, Agent or Firm:
Takeshi Imai
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