Implementation of the quantitative evaluation method of the tempering effect during heating and cooling processes in post-weld heat treatment |
| |
Authors: | Lina Yu Takashi Sakai Kazuyoshi Saida Kazutoshi Nishimoto Yoji Sakata |
| |
Affiliation: | 1. Graduate School of Engineering, Osaka University;2. Department of Applied Nuclear Technology, Fukui University of Technology;3. OCL Corporation |
| |
Abstract: | In order to evaluate the temper effect during the multiple post-weld heat treatment (PWHT) process, the thermal cycle tempering parameter (TCTP) proposed by the authors, which is derived by extending the Larson–Miller parameter (LMP) to a non-isothermal process, has been used to evaluate quantitatively the temper effect during heating and cooling processes in the process of PWHT. It has been clarified that the temper effect in the multiple PWHT process including long-time heating and cooling processes can be quantitatively evaluated by TCTP. On the basis of the present study, it might be possible to shorten the holding time of the heat treatment for multiple PWHT. |
| |
Keywords: | PWHT tempering effect TCTP heating process cooling process |
|