公开(公告)号：US11378526B2

公开(公告)日：2022-07-05

申请号：US16269936

申请日：2019-02-07

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD. ,  National Institute for Materials Science

发明人： Nobuhiko Saito ,  Nobuyoshi Komai ,  Yuichi Hirakawa ,  Hiroaki Fukushima ,  Kota Sawada ,  Kazuhiro Kimura ,  Kaoru Sekido

IPC分类号： B23K31/12 ,  G01N23/04 ,  B23K103/04 ,  G01N23/2206 ,  G01N23/2251 ,  G01N23/2273 ,  G01N23/20

摘要： A faulted condition determination method is designed to detect a chromium content and a nickel content in a predetermined boundary region proximate to a boundary between a high-strength ferrite steel and a weld material in a welded joint in which the high-strength ferrite steel and another steel are welded together using the weld material containing nickel and to thereby determine the faulted condition of the predetermined boundary region based on the chromium content and the nickel content. Accordingly, it is possible to appropriately determine the faulted condition of welding of a replacement part in which a high-strength ferrite steel and another steel are welded together using a nickel-based weld material.