| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for evaluating a life of a metal member having a welded part and made of austenitic stainless steel using a simple process, and to provide a device for evaluating the life. ! SOLUTION: There is provided the method for evaluating a life of a metal member 10 in which a fresh member made of fully austenitic stainless steel and a member made of fully austenitic stainless steel and used for a long term in a high-temperature environment are welded together at a welding part 16. The method includes: a step of acquiring a magnetic ratio of a heat-affected zone of the member used for a long term in a high-temperature environment; and a step of collating the magnetic ratio of the heat-affected zone with a pregenerated master curve showing correlation between the life consumption rate and the magnetic ratio of fully austenitic stainless steel subjected to aging treatment, thereby acquiring the life consumption rate of the metal member 10. ! COPYRIGHT: (C)2014,JPO&INPIT |
