Title:
TITANIUM ALLOY PLATE AND GOLF CLUB HEAD
Document Type and Number:
WIPO Patent Application WO/2020/261436
Kind Code:
A1
Abstract:
This titanium alloy plate contains, in mass%,7.50-8.50% of Al, 0.70-1.50% of Fe, 0.50-2.00% of Nb, 0.05-0.30% of Si, 0.0-2.0% of Cr, 0.25% or less of O, 0.010% or less of N, 0.010% or less of C, and 0.013% or less of H, the balance being Ti and incidental impurities, where [Al%] + 10 × [O%] ≤ 10.00% is satisfied. The titanium alloy plate is characterized in that the area percentage of the α phase is 85.0% or more, and of crystal grains having the α phase, the area proportion of crystal grains having an aspect ratio of 3.3 or less is 50.0% or more, and the area percentage of crystal grains for which the angle θ between the c-axis and the in-plane direction of the plate which is the maximum accumulation direction in a hexagonal close-packed lattice included in the α phase is 0-20°, is 25.0-40.0%, and the titanium alloy plate has a layered structure.
Inventors:
TAKEBE HIDENORI (JP)
SHIBUYA MASAYUKI (JP)
TSUKAMOTO GENKI (JP)
KAWAKAMI AKIRA (JP)
SHIBUYA MASAYUKI (JP)
TSUKAMOTO GENKI (JP)
KAWAKAMI AKIRA (JP)
Application Number:
PCT/JP2019/025407
Publication Date:
December 30, 2020
Filing Date:
June 26, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C14/00; A63B53/04; C22F1/00; C22F1/18
Foreign References:
| JP2009167518A | 2009-07-30 | |||
| JP2019014965A | 2019-01-31 | |||
| JP2009084690A | 2009-04-23 |
Attorney, Agent or Firm:
HAGIWARA, Yasushi et al. (JP)
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