Title:
TITANIUM ALLOY SHEET AND EYE GLASSES
Document Type and Number:
WIPO Patent Application WO/2024/048002
Kind Code:
A1
Abstract:
This titanium alloy sheet has a chemical composition comprising, in % by mass, 1.00 to 7.00% of Al, 0.10 to 1.70% of Fe, 0.05 to 0.30% of O, 0.000 to 0.080% of N, 0.000 to 0.100% of C, 0.000 to 0.013% of H, 0.00 to 2.00% of Cu, 0.00 to 0.30% of Si and a remainder comprising Ti and impurities, in which a metal structure contains an α-phase at an area ratio of 80% or more, the average crystal grain diameter of the α-phase is 20.0 μm or less, the area ratio of αt-30 comprising crystal grains having an angle between the c-axis and the direction of the thickness of the titanium alloy sheet of 30 degrees or less in the α-phase is 20 to 60%, and the area ratio of crystal grains having an average GOS value of 2.0 or less when measured by employing EBSD in the αt-30 is 80% or more.
Inventors:
TSUKAMOTO GENKI (JP)
KUNIEDA TOMONORI (JP)
TAKAHASHI KAZUHIRO (JP)
KUNIEDA TOMONORI (JP)
TAKAHASHI KAZUHIRO (JP)
Application Number:
PCT/JP2023/021740
Publication Date:
March 07, 2024
Filing Date:
June 12, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C14/00; C22F1/00; C22F1/18; G02C5/00
Domestic Patent References:
| WO2019044851A1 | 2019-03-07 | |||
| WO2020213719A1 | 2020-10-22 | |||
| WO2017175569A1 | 2017-10-12 | |||
| WO2016152935A1 | 2016-09-29 |
Foreign References:
| JP2021080519A | 2021-05-27 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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