公开(公告)号：US09670572B2

公开(公告)日：2017-06-06

申请号：US14705264

申请日：2015-05-06

申请人： ALSTOM Technology Ltd

发明人： Thomas Etter ,  Roman Engeli ,  Andreas Kuenzler

IPC分类号： C22F1/10 ,  C22C19/03 ,  C22C19/07 ,  C21D6/00 ,  B22F3/105 ,  B22F3/15 ,  B22F3/16 ,  B22F3/24 ,  B33Y40/00 ,  B22F5/00

CPC分类号： C22F1/10 ,  B22F3/1055 ,  B22F3/15 ,  B22F3/16 ,  B22F3/24 ,  B22F5/009 ,  B22F2003/248 ,  B33Y40/00 ,  C21D6/00 ,  C22C19/03 ,  C22C19/07 ,  Y02P10/295

摘要： The invention relates to a method of post-built up heat treatment of an additively manufactured high strength component made of a gamma-prime strengthened superalloy based on Ni or Co or Fe or combinations thereof. An application of a rapid heating-up rate of 25 to 60° C./min in a specific temperature range during the first post-built heat treatment after additive manufacturing avoids or at least minimizes the gamma-prime precipitation in the component during heat-up. This results in crack-free components/articles compared to significant cracking present in conventionally heat treated components.