2017年2月
Effect of process variable on temperature distribution in the heat-affected zone of temper bead welds
Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
- ,
- ,
- 巻
- 35
- 号
- 1
- 開始ページ
- 13S
- 終了ページ
- 17S
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2207/QJJWS.35.13S
© 2017 Japan Welding Society. All rights reserved. Stress corrosion cracking (SCC) has recently been observed in Ni-based alloy welds in nuclear power plants, despite countermeasures to prevent it. In the repair welding, temper bead welding (TBW) is applicable when post weld heat treatment (PWHT) is difficult to carry out. In TBW, the welding process variables are appropriately controlled so that the thermal cycles of the subsequent passes provide the area hardened by previous passes with the temper effect, so the hardened area size and thermal cycle tempering parameter (TCTP) are very important. However, very few studies have discussed the quantitative relationships among the hardened area size, TCTP and the welding process variables. In this study, we conducted a combined weld bead surface profile and heat conduction analysis for simulating temper bead welding with Ni-based filler metal to SQV2A plate under various welding conditions. We quantified the hardened area size and TCTP as linear functions of the welding process variable parameter, which was derived from welding heat conduction theory with a moving heat source. Consequently, we concluded that the appropriate welding conditions in temper bead repair welding can be determined based on the welding process variable parameter.
- リンク情報
- ID情報
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- DOI : 10.2207/QJJWS.35.13S
- ISSN : 0288-4771
- SCOPUS ID : 85076574259