| 摘要 |
A method of metalworking a substrate (10) previously strengthened in a gas heat treatment to form precipitates throughout an entire volume of the substrate (10), where the precipitates have an active chemical element incorporated during the gas heat treatment. The method includes: melting a portion of the substrate (10) during a full penetration metalworking process to form a molten portion (12); generating a metalworking atmosphere (22) having a supply of an active chemical element in a gas state during the metalworking process; exposing the molten portion (12) to the metalworking atmosphere (22); and cooling the molten portion (12) while maintaining exposure to the metalworking atmosphere (22) to form a solidified portion (36) comprising precipitates comprising the active chemical element, where the precipitates are present throughout an entire volume of the solidified portion (36), and thereby re-strengthen the entire volume of the solidified portion (36). |
