REPAIR OF SIGMATIZED STAINLESS STEELS

摘要

The present invention relates to compositions and methods for repairing stainless steel, comprising the steps: a) providing a stainless steel body have a body surface, wherein at least a portion of the body surface comprises a surface defect and sigma phase precipitate; b) removing the body surface portion comprising the surface defect to expose a repair zone surface portion; c) heat treating the repair zone surface; d) forming a compressive stress field in the repair zone surface; and e) after forming the compressive stress field, welding a weld repair material to the repair zone surface to form a weld repair