Computational analysis of thermal and mechanical conditions for weld metal solidification cracking

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Abstract

Weld metal solidification cracking (hot cracking) has been a major, persistent problem in a variety of engineering alloys. Solidification cracking is a result of the competition between the material's resistance to cracking and the mechanical driving force for cracking. The paper presents the development of a finite element analysis procedure and the results regarding the mechanical driving force (mechanical strain evolutions) in the solidification brittle temperature range in which solidification cracking occurs. Two new modelling techniques are developed to simulate the effects of solidification which are universal to fusion welding but have been so far neglected in most heat transfer and stress/distortion analyses of weldments.

Original languageEnglish
Pages (from-to)340-347
Number of pages8
JournalWelding in the World
Volume33
Issue number5
StatePublished - 1994
Externally publishedYes

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