Titanium(ti) Or Titanium Base Alloy Patents (Class 148/669)
  • Patent number: 5141574
    Abstract: A wear-resistant titanium alloy containing titanium carbides which are crystallized and/or precipitated and are dispersed in the .beta.-phase matrix is disclosed. The alloy may further comprise .alpha.-phase and/or additional hard particles dispersed in the .beta.-phase matrix.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: August 25, 1992
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Wataru Takahashi, Yoshihito Sugimoto, Mutsuo Nakanishi, Yoshiaki Shida, Minoru Okada
  • Patent number: 5124121
    Abstract: A titanium base alloy with improved superplastic, hot workability, cold workability, and mechanical properties is provided. The alloy has about 4% Al and 2.5% V, with below 0.15% O, with 2% Fe and 2% Mo, 0.85.about.3.15 wt. % Mo, and at least one element from the group of Fe, Ni, Co, and Cr as beta stabilizing elements, and as contributing elements to the lowering of beta transus, finally to the improvement of the superplastic properties, and hot and cold workability, with the grain size of below 5 .mu.m. A method of making thereof is provided with the reheating temperature between beta transus minus 250.degree. C. and beta transus.A method of superplastic forming thereof is provided with the heat treating temperature between beta transus minus 250.degree. C. and beta transus.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: June 23, 1992
    Assignee: NKK Corporation
    Inventors: Atsushi Ogawa, Kuninori Minakawa, Kazuhide Takahashi