| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-strength titanium alloy sheet having excellent bendability and press formability, which is inexpensive further, and a method of producing the titanium alloy sheet. SOLUTION: The titanium alloy sheet containsβstabilizing element of 0.8-2.5 mass%, the area ratio of anαphase is 80-97%, the average crystal grain size of theαphase is 10μm or smaller, and the average value of an inclination angleθformed by the normal of the (0001) surface of theαphase and the normal of a rolling surface is 40°or larger. Also, the area ratio of theαphase whose inclination angleθis 70°or larger occupying in the entireαphase is 20% or higher. Further, the maximum crystal grain size of aβphase is 20μm or smaller. COPYRIGHT: (C)2011,JPO&INPIT
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