Ni 基耐熱合金の溶接後熱処理割れに関する研究(第 2 報) : 溶接後熱処理割れ感受性の評価法(<特集>最近のろう接技術)

概要

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In this study, several methods were examined to evaluate the post-weld heat treatment (PWHT) cracking susceptibility of Ni-base heat resistant alloys. The results obtained in this study are as follows; 1) The PWHT cracking susceptibility of Ni-base heat resistant alloys can be estimated qualitatively by a PWHT cracking test apparatus using specimens with reinforcement. Quantitative evaluation of the PWHT cracking sucseptibility can be done using specimens with notch instead of specimens with reinforcement. 2) The PWHT cracking susceptibility of Ni-base heat resistant alloys can be esaily evaluated by the minimum value of critical crack opening displacement obtained by the elevated temperature tensile test.
社団法人溶接学会の論文
1978-04-05