溶接継手の疲れ強さ改善におよぼす局部加熱急冷の影響(第 2 報) : 突合せおよびすみ肉継手の疲れ強さ改善について

概要

論文の詳細を見る
In the previous report, it was deduced that fatigue strength improvement of welded joint by spot heating below A_1 point and rapid cooling is mainly due to the quench aging effect, using notched plate specimens. This conclusion of the previous report was confirmed in this study, using butt and fillet welded joint of SS41 and SM50B steel. Results obtained were as follows : 1) Fatigue strength of butt, Tee fillet and cruciform fillet welded joints were remarkably improved by center spot heating or side spot heating. Therefore, it is deduced that quench again effect is significant cause to improve the fatigue strength of welded joint by such heat treatment. This result was the same as the previous conclusion. 2) There was no remarkable difference between the effect of spot heat treatment on fatigue strength of SS41 steel and SM50B steel welded joint.
社団法人溶接学会の論文
1979-05-05