An analytical model for intergranular liquid feeding and its effect on solidification cracking

It was shown that, without computational fluid dynamics, intergranular liquid feeding in the mushy zone during welding of an alloy can still be calculated using an analytical model. The intergranular channel was approximated as a round pipe whose radius varies with the fraction of solid f S , which...

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Bibliographic Details
Published inScience and technology of welding and joining Vol. 27; no. 5; pp. 319 - 325
Main Authors Liu, Jiangwei, Wu, Yafang, Hu, Pengfei, Kou, Sindo
Format Journal Article
LanguageEnglish
Published London, England Taylor & Francis 04.07.2022
SAGE Publications
Subjects
2014 Al
5086 Al
Analytical model
intergranular liquid feeding
solidification cracking
welding
Analytical model
2014 Al
intergranular liquid feeding
welding
5086 Al
solidification cracking
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Summary:It was shown that, without computational fluid dynamics, intergranular liquid feeding in the mushy zone during welding of an alloy can still be calculated using an analytical model. The intergranular channel was approximated as a round pipe whose radius varies with the fraction of solid f S , which in turn varies with temperature T. The model was applied to 2014 Al (∼Al-4.4Cu) and 5086 Al (∼Al-4.0Mg) to compare their susceptibility to solidification cracking. Based on the extent of the liquid pressure drop caused by intergranular liquid flow, the contribution to the crack susceptibility by transverse tension was compared to that by solidification shrinkage.
ISSN:1362-1718
1743-2936
DOI:10.1080/13621718.2022.2051409