Publication:
Evaluation of hot cracking in nitrogen-bearing and fully austenitic stainless steel weldments

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cris.author.scopus-author-id57451398700
cris.author.scopus-author-id7201760244
cris.author.scopus-author-id7102312508
cris.author.scopus-author-id7102152350
dc.contributor.authorShankar, V.
dc.contributor.authorGill, T. P.S.
dc.contributor.authorMannan, S. L.
dc.contributor.authorSundaresan, S.
dc.date.accessioned2023-09-20T05:49:22Z
dc.date.available2023-09-20T05:49:22Z
dc.date.issued01-06-1998
dc.description.abstractStainless steels exhibiting a primary austenitic solidification mode are particularly susceptible to hot cracking during welding. It is often difficult to predict the behavior of such materials, since the cracking is extremely sensitive to levels of impurity and minor elements such as P, S and N. In this work, the fusion zone and HAZ cracking behavior of a nitrogen-bearing AISI Type 316LN steel and fully austenitic Alloy D9 were investigated using the Varestraint Test. The results of the cracking tests were compared with that of a conventional primary ferritic 316L composition. The crack length measurements revealed that the 316LN was highly susceptible to fusion zone and HAZ cracking, while Alloy D9 was moderately susceptible. Analysis of the cracking data revealed that the total crack length criterion provided a better estimate of weldability than maximum crack length and brittleness temperature range criteria. Correlation of the composition and cracking susceptibility - including data obtained from the literature - indicated an interaction between nitrogen and phosphorus in enhancing cracking. A high degree of base and weld metal HAZ microfissuring was produced in 316LN, in comparison with 316L, which was attributed to the detrimental effect of nitrogen in this alloy. Heat-affected zone cracks were quite susceptible to backfilling, presumably due to favorable capillary and thermal conditions in this region.
dc.identifier.issn432296
dc.identifier.scopus2-s2.0-3643107314
dc.identifier.urihttps://apicris.irins.org/handle/IITM2023/56703
dc.relation.ispartofseriesWelding Journal (Miami, Fla)
dc.sourceWelding Journal (Miami, Fla)
dc.subjectAustenitic
dc.subjectGTAW
dc.subjectHAZ Cracking
dc.subjectHot Cracking
dc.subjectStainless Steel
dc.subjectWeldability
dc.titleEvaluation of hot cracking in nitrogen-bearing and fully austenitic stainless steel weldments
dc.typeJournal
dspace.entity.typePublication
oaire.citation.endPages
oaire.citation.issue6
oaire.citation.startPage193
oaire.citation.volume77
person.affiliation.cityChennai
person.affiliation.cityKalpakkam
person.affiliation.id60025757
person.affiliation.id60002881
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndira Gandhi Centre for Atomic Research
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