发明名称 |
Ni-base superalloy, method for producing the same, and turbine blade or turbine vane components |
摘要 |
A Ni-base superalloy having a chemical composition comprising Cr: 3.0-5.0 wt %, Co: 5.0-10.0 wt %, Mo: 0.5-3.0 wt %, W: 8.0-10.0 wt %, Ta: 5.0-8.0 wt %, Nb: 3.0 wt % or less, Al: 4.5-6.0 wt %, Ti: 0.1-2.0 wt %, Re: more than 3.0-4.0 wt %, Ru: 0.2-4.0 wt %, Hf: 0.01-0.2 wt %, and the balance being Ni and unavoidable impurities, a method for producing the same, and turbine blade or turbine vane components are disclosed. The Ni-base superalloy has high creep strength and textural stability under high temperature environment, and is excellent in applicability to turbine blade or turbine vane components of large-sized gas turbines. |
申请公布号 |
US8852500(B2) |
申请公布日期 |
2014.10.07 |
申请号 |
US200712225254 |
申请日期 |
2007.03.16 |
申请人 |
National Institute for Materials Science |
发明人 |
Koizumi Yutaka;Harada Hiroshi;Yokokawa Tadaharu;Kobayashi Toshiharu |
分类号 |
C22C19/05;F01D5/14;C22F1/10 |
主分类号 |
C22C19/05 |
代理机构 |
Wenderoth, Lind & Ponack, L.L.P. |
代理人 |
Wenderoth, Lind & Ponack, L.L.P. |
主权项 |
1. A Ni-base superalloy having a chemical composition consisting of Cr: 3.0-4.5 wt %, Co: 5.0-10.0 wt %, Mo: 0.5-3.0 wt %, W: 8.3-10.0 wt %, Ta: 5.0-8.0 wt %, Nb: 3.0 wt % or less, Al: 4.5-6.0 wt %, Ti: 0.1-2.0 wt %, Re: 3.2-3.8 wt %, Ru: 0.2-4.0 wt %, Hf: 0.01-0.2 wt %, and the balance being Ni and unavoidable impurities, and
optionally the elements of C: 0.05 wt % or less, Zr: 0.1 wt % or less, V: 0.5 wt % or less, B: 0.02 wt % or less, Y: 0.2 wt % or less, La: 0.2 wt % or less, and Ce: 0.2 wt % or less alone or in combination. |
地址 |
Ibaraki JP |