Title:
チタン板および銅箔製造ドラム
Document Type and Number:
Japanese Patent JP6863531
Kind Code:
B2
Abstract:
This titanium sheet has a chemical composition containing, by mass%, O: 0% to 0.400%, Cu: 0% to 1.50%, Fe: 0% to 0.500%, N: 0.100% or less, C: 0.080% or less, H: 0.0150% or less, and the balance Ti and impurities. The titanium sheet has a metallographic structure containing α-phases, the crystalline structure of which is a hexagonal close-packed structure, wherein: an average crystal grain size is 40 µm or less; when a normal of the (0001) plane of a crystal having the hexagonal close-packed structure is defined as c-axis, the area ratio of crystal grains the c-axes of which tilt within an angle of 40° from the direction of a normal line of the sheet surface to all crystal grains is 70% or higher; and a standard deviation of a grain size distribution based on logarithms of crystal grain sizes in µm units is 0.80 or less.
Inventors:
Kunieda Chitoku
Mamoru Goto
Atsuhiko Kuroda
Katsuhiko Takezu
Akio Karato
Mamoru Goto
Atsuhiko Kuroda
Katsuhiko Takezu
Akio Karato
Application Number:
JP2020549828A
Publication Date:
April 21, 2021
Filing Date:
April 17, 2020
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C14/00; C22F1/18
Domestic Patent References:
| JP2013001973A | ||||
| JP2012112017A | ||||
| JP2010202952A |
Foreign References:
| WO2019043882A1 | ||||
| WO2018003098A1 | ||||
| WO2016140231A1 |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi