応力除去焼鈍割れに関する研究(第 1 報) : 高張力鋼溶接熱影響部に発生する応力除去焼鈍割れについて

概要

論文の詳細を見る
Heat-affected zone cracking due to stress relief heat treatment has been investigated on a wide variety of ferritic steels by simple welding tests and a bend restraint SR cracking test. The results indicate that intercrystalline cracking may occur during the heat treatment; local stress raisers are necessary to initiate this cracking; this cracking may not occur in deposited metal and parent metal inaffected; and susceptibility to cracking depends markedly on chemical composition. Suggested remedies for the cracking problems are : the use of (1) buttering technique prior to welding, (2) grinding off the excess weld metal to remove the notch of the weldment before stress relieving, and/or (3) preventive bead technique before stress relieving.
社団法人溶接学会の論文
1964-09-25