Article: Study on the mechanical heterogeneity of electron beam welded thick TC4-DT joints

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TitleStudy on the mechanical heterogeneity of electron beam welded thick TC4-DT joints
AuthorsLu, W1
Li, X1
Lei, Y1
Shi, Y1
KeywordsDamage-Tolerant Ti-6Al-4V
Electron Beam Welding
Mechanical Properties
Issue Date2012
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/msea
CitationMaterials Science And Engineering A, 2012, v. 540, p. 135-141 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.msea.2012.01.117
AbstractTensile properties and microhardness of electron beam welded thick damage-tolerant Ti-6Al-4V joints with the weld cross-section of parallel shaped and taper shaped configurations were examined. Moreover, the mechanical heterogeneity along the weld depth was studied. The results indicate that for both the shaped joints, the weld metal exhibits increased strength and microhardness, while decreased ductility and toughness as compared with the base metal. The mechanical properties of the weld metal are heterogeneous along the weld depth. With the increase of weld depth, the strength and microhardness increase. The weld middle position has smaller mechanical heterogeneity than the weld top and weld root. Moreover, the heterogeneity of parallel shaped welds along the weld depth is lower than that of taper shaped welds. It is also found that the change of mechanical properties such as strength and microhardness has microstructure dependent trend. The mechanical heterogeneity along the weld depth is dependent on the grain size change of β phase and martensite. © 2012 Elsevier B.V.
ISSN0921-5093
2011 Impact Factor: 2.003
2011 SCImago Journal Rankings: 0.127
DOIhttp://dx.doi.org/10.1016/j.msea.2012.01.117
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorLu, W
dc.contributor.authorLi, X
dc.contributor.authorLei, Y
dc.contributor.authorShi, Y
dc.date.accessioned2012-10-08T03:23:48Z
dc.date.available2012-10-08T03:23:48Z
dc.date.issued2012
dc.description.abstractTensile properties and microhardness of electron beam welded thick damage-tolerant Ti-6Al-4V joints with the weld cross-section of parallel shaped and taper shaped configurations were examined. Moreover, the mechanical heterogeneity along the weld depth was studied. The results indicate that for both the shaped joints, the weld metal exhibits increased strength and microhardness, while decreased ductility and toughness as compared with the base metal. The mechanical properties of the weld metal are heterogeneous along the weld depth. With the increase of weld depth, the strength and microhardness increase. The weld middle position has smaller mechanical heterogeneity than the weld top and weld root. Moreover, the heterogeneity of parallel shaped welds along the weld depth is lower than that of taper shaped welds. It is also found that the change of mechanical properties such as strength and microhardness has microstructure dependent trend. The mechanical heterogeneity along the weld depth is dependent on the grain size change of β phase and martensite. © 2012 Elsevier B.V.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationMaterials Science And Engineering A, 2012, v. 540, p. 135-141 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.msea.2012.01.117
dc.identifier.citeulike10429946
dc.identifier.doihttp://dx.doi.org/10.1016/j.msea.2012.01.117
dc.identifier.epage141
dc.identifier.issn0921-5093
2011 Impact Factor: 2.003
2011 SCImago Journal Rankings: 0.127
dc.identifier.scopuseid_2-s2.0-84862813501
dc.identifier.spage135
dc.identifier.urihttp://hdl.handle.net/10722/168638
dc.identifier.volume540
dc.languageeng
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/msea
dc.publisher.placeSwitzerland
dc.relation.ispartofMaterials Science and Engineering A
dc.relation.referencesReferences in Scopus
dc.subjectDamage-Tolerant Ti-6Al-4V
dc.subjectElectron Beam Welding
dc.subjectMechanical Properties
dc.titleStudy on the mechanical heterogeneity of electron beam welded thick TC4-DT joints
dc.typeArticle
Author Affiliations
  1. Beijing University of Technology