| 发明名称 | Ni-based single crystal super alloy | ||
| 摘要 | The object of the present invention is to provide an Ni-based single crystal super alloy capable of improving strength by preventing precipitation of a TCP phase at high temperatures. This object is achieved by an Ni-based single crystal super alloy having a composition comprising 5.0-7.0 wt % of Al, 4.0-10.0 wt % of Ta, 1.1-4.5 wt % of Mo, 4.0-10.0 wt % of W, 3.1-8.0 wt % of Re, 0-0.50 wt % of Hf, 2.0-5.0 wt % of Cr, 0-9.9 wt % of Co and 4.1-14.0 wt % of Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities. Furthermore, in this Ni-based single crystal super alloy, when lattice constant of matrix is taken to be a1 and lattice constant of precipitation phase is taken to be a2, a2≦0.999a1. | ||
| 申请公布号 | US8968643(B2) | 申请公布日期 | 2015.03.03 |
| 申请号 | US201012900896 | 申请日期 | 2010.10.08 |
| 申请人 | National Institute for Materials Science;IHI Corporation | 发明人 | Kobayashi Toshiharu;Koizumi Yutaka;Yokokawa Tadaharu;Harada Hiroshi;Aoki Yasuhiro;Arai Mikiya;Masaki Shoju |
| 分类号 | C22C19/05;C30B29/52 | 主分类号 | C22C19/05 |
| 代理机构 | Ostrolenk Faber LLP | 代理人 | Ostrolenk Faber LLP |
| 主权项 | 1. An Ni-based single crystal super alloy having a composition comprising 5.8 wt % of Al, 5.8 wt % of Ta, 3.9 wt % of Mo, 5.8 wt % of W, 4.9 wt % of Re, 0.10 wt % of Hf, 2.9 wt % of Cr, 5.8 wt % of Co and 6.0 wt % of Ru in terms of weight ratio, with the remainder consisting of Ni and unavoidable impurities; and wherein when lattice constant of matrix is taken to be a1 and lattice constant of precipitation phase is taken to be a2, a2≦0.9965a1. | ||
| 地址 | JP | ||