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Experimental and numerical investigations of the creep behaviour of the dissimilar weldment GS‐17 CrMoV 5 11 and X 20 CrMoV 12 1
Author(s) -
Buchmayr Bruno,
Cerjak Horst,
Witwer Michael,
Maile Karl,
Theofel Heinrich,
Eckert Wilhelm
Publication year - 1990
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199000346
Subject(s) - welding , creep , metallurgy , materials science , heat affected zone , stress (linguistics) , linguistics , philosophy
In the collaborative programme between MPA, Stuttgart, and the Institute for Materials Science and Welding Technology at the Technical University, Graz, within the framework of COST 505 “Materials for Steam Turbines”, the creep‐rupture behaviour of the dissimilar weldment 1%CrMoV/12%CrMoV was investigated. Independent of the effects given by the welding process, weld metal and post weld heat treatment, the fine‐grained zone in the HAZ of the lower alloyed steel grade was life‐determining after long‐time creep loading. The decarburized coarse grained HAZ near the fusion line is critical at higher stress levels, e.g. breakdowns.