| 发明名称 |
LOW MELTING POINT BRAZE ALLOY FOR HIGH TEMPERATURE APPLICATIONS |
| 摘要 |
A multi component braze filler alloy is described having a melting temperature less than about 1235 deg. C. and greater than about 1150 deg. C. This alloy can be processed by hot isostatic pressing (HIP) at a temperature above about 1065 deg. C. and is particularly suited for the repair of gas turbine blades and vanes, especially those made from Alloy 247. The relatively low Ti content in the present braze alloy tends to form less MC carbides at the joint interface, particularly in comparison with other braze alloys high in Zr and/or Hf. Processes for employing this braze filler alloy in processing of nickel-base superalloys, especially Alloy 247, are presented. |
| 申请公布号 |
US2015224608(A1) |
申请公布日期 |
2015.08.13 |
| 申请号 |
US201514690497 |
申请日期 |
2015.04.20 |
| 申请人 |
Siemens Energy, Inc. |
发明人 |
Kazim Kazim;Piegert Sebastian |
| 分类号 |
B23P6/04;C22C19/05;B23K35/30;B32B15/01;B23K1/00 |
主分类号 |
B23P6/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for repairing at least one crack in a nickel-base superalloy component comprising:
a) applying to said at least one crack a quantity of a braze alloy having substantially the following composition in weight percents: Ni(XNi)—Cr(XCr)—Ti(XTi)—Al(XAl)—Co(XCo)—W(XW)—Mn(XMn)—Ta(XTa) wherein said weight percentages Xz lie in the following ranges:
12%≦XCr≦16%,13%≦XTi≦16%,0%<XAl≦2%,2%≦XCo≦4%,3%≦XW≦5%,0%<XMn≦2%,0%<XTa≦2%,XNi=(balance), and; b) brazing said nickel-base superalloy component having said braze alloy in said at least one crack at a brazing temperature in the range from approximately 1225 deg. C. to approximately 1250 deg. C., wherein said nickel-base superalloy is not substantially damaged at said brazing temperature. |
| 地址 |
Orlando FL US |
