How to evaluate the effect of stress-relief heat treatment
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Carbon steel pipe enclosures with partition diaphragms require post-weld stress relief heat treatment. How can the effectiveness of this heat treatment be verified, and how can it be determined whether the welding stresses have been relieved?
All I know is about hardness testing: lol
Test specimens, hardness, and residual stress measurement. Generally speaking, however, the means available for evaluating the effectiveness of heat treatment are limited; control over the heat treatment process is the main approach. The following article can be referred to: Abstract | Post-weld heat treatment of pressure vessels – Several issues in standards and practice https://mp.wei*n.qq.com/s/sTM7vsBsEjDv9Ad0oJpUpw