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Effect of filler metal composition on microstructural and mechanical characterization of dissimilar welded joint of nitronic steel and super duplex stainless steel

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cris.author.scopus-author-id57224144952
cris.author.scopus-author-id56494528900
cris.author.scopus-author-id15046468500
cris.lastimport.scopus2024-06-04T06:40:25Z
cris.sourceId14000156254
cris.virtual.author-orcid0000-0002-3687-5226
cris.virtual.author-orcid0000-0002-1301-5346
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.departmentDepartment of Mechanical Engineering
cris.virtual.departmentDepartment of Mechanical Engineering
cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid5e536813-8775-4b37-94d4-466cb17f44f9
cris.virtualsource.author-orcid50662a20-d568-429c-aa42-60540ac7a80a
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.department5e536813-8775-4b37-94d4-466cb17f44f9
cris.virtualsource.department50662a20-d568-429c-aa42-60540ac7a80a
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.contributor.authorMaurya, Anup Kumar
dc.contributor.authorPandey, Chandan
dc.contributor.authorChhibber, Rahul
dc.date.accessioned2024-06-01T13:39:27Z
dc.date.available2024-06-01T13:39:27Z
dc.date.issued2022-05-01
dc.description.abstractThe present paper experimentally investigates the effect of filler metal on the mechanical behavior, solidification, and microstructure of the super duplex stainless steel (sDSS2507) and nitronic steel (N50) dissimilar welded joint. This dissimilar joint is primarily applicable in the subsea control unit for high-pressure tubing and coupler assembly. For this investigation, the gas tungsten arc welding process (GTAW) employed the super duplex filler ER2594 and carbon steel grade ER70S-2 filler. The weld's structural integrity has been assessed to compare both the fillers through multiple investigations on the joint. The microstructure characterization of the base metal and as-welded specimen was carried out using an optical microscope (OM) and scanning electron microscope (SEM). Super duplex filler ER2594 weld solidified in primary ferritic mode with precipitation of several reformed austenite in the ferrite matrix, whereas ER70S-2 filler weld had long martensite laths embedded in ferrite matrix. The microstructural study reported the presence of microsegregation and Type II boundary formation. The type-II boundary is detected close to the fusion boundary at the N50 and the sDSS 2507 side of the ER70S-2 weldment. The Vickers microhardness test, Charpy impact test, and the tensile test were performed to obtain the mechanical properties of this joint. The microhardness investigation of the weld zone of ER2594 and ER70S-2 shows the average hardness of 287.34 ± 10 Hv0.5 and 372.36 ± 10 Hv0.5, respectively. The peak hardness of 410 Hv0.5 was observed in the weld zone of ER70S-2. The formation of large martensite laths in the ferrite matrix in the weld zone leads to higher hardness in ER70S-2 filler compared to the precipitation of softer reformed austenite in the ER2594 filler. The average impact toughness result of ER2594 and ER70S-2 is 165 ± 5 J and 110 ± 8 J, respectively. The Charpy impact trials showed the ductile fracture mode by employing ER2594 filler, while ER70S-2 showed the mixed fracture mode (ductile–brittle). The weldment tensile strength of filler ER2594 and ER70S-2 is 897 MPa and 873 MPa, respectively. The tensile test results indicate the ductile fracture mode for both fillers, and the failures were detected in sDSS2507.
dc.identifier.articlenumber90
dc.identifier.citedby25
dc.identifier.coverDisplayDateMay 2022
dc.identifier.doi10.1007/s43452-022-00413-9
dc.identifier.pageRange
dc.identifier.scopus2-s2.0-85126264005
dc.identifier.sherpaUrlhttps://v2.sherpa.ac.uk/id/publication/26032
dc.identifier.subtypear
dc.identifier.subtypeDescriptionArticle
dc.identifier.urihttps://apicris.irins.org/handle/IITJ2024/82374
dc.relation.ispartofArchives of Civil and Mechanical Engineering
dc.relation.ispartofseriesArchives of Civil and Mechanical Engineering
dc.relation.issn16449665
dc.right0
dc.rightsfalse
dc.sourceArchives of Civil and Mechanical Engineering
dc.subjectDissimilar welded joint
dc.subjectMechanical properties
dc.subjectMicrostructure
dc.subjectNitronic steel
dc.subjectSolidification
dc.subjectSuper duplex stainless steel
dc.titleEffect of filler metal composition on microstructural and mechanical characterization of dissimilar welded joint of nitronic steel and super duplex stainless steel
dc.typeJournal
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume22
oaire.venue.unpaywallclose
person.affiliation.cityJodhpur
person.affiliation.countryIndia
person.affiliation.id60104343
person.affiliation.nameIndian Institute of Technology Jodhpur
person.affiliation.nameIndian Institute of Technology Jodhpur
person.affiliation.nameIndian Institute of Technology Jodhpur
person.affiliation.nameIndian Institute of Technology Jodhpur
person.identifier.scopus-author-id57224144952
person.identifier.scopus-author-id56494528900
person.identifier.scopus-author-id15046468500
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