Reheat Cracking Test on High Strength Steels by a Modified Implant Test

概要

論文の詳細を見る
A modified implant test was proposed in this paper as the suitable method for assessing the sensitivity to reheat cracking which has occasionally occurred in the welded zone of 80 kgf/mm^2 high strength steels. It was confirmed from the test result of commercial high strength steels that the reheat cracking sensitivity could be compared in terms of the critical value of the initial restraint stress, σAW-crit, obtained by the implant test. T-1 type high strength steel which contained both chromium and molybdenum was much more sensitive to cracking than chromium free, Mo steel. The reheat cracking sensitivity of synthetic Ni-Cr-Mo and Cr-Mo steels, in which nickel and chromium contents were varied, was also examined, Nickel increased the sensitivity only when its content exceeded 1.5%. The chromium addition up to about 1% together with molybdenum remarkably increased the sensitivity.
社団法人溶接学会の論文
1983-10-01