DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, H.S. | ko |
dc.contributor.author | Lee, Byung Chai | ko |
dc.date.accessioned | 2013-03-08T13:21:44Z | - |
dc.date.available | 2013-03-08T13:21:44Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2006 | - |
dc.identifier.citation | KEY ENGINEERING MATERIALS, v.326-328 I, no.0, pp.669 - 672 | - |
dc.identifier.issn | 1013-9826 | - |
dc.identifier.uri | http://hdl.handle.net/10203/93113 | - |
dc.description.abstract | Laser-welded parts experience high local temperatures and severe heating-cooling cycles which lead to large local residual stresses. These stresses introduce unacceptable degradation of the mechanical properties of a weldment. Thermo-elasto plastic analyses with 3-D FE models, as well as experimental investigations were performed in order to predict temperature distribution and residual stresses of ND-YAG laser-welded joints with various gap widths between the dissimilar steel types of austenitic and precipitation-hardening stainless steel. The specimens have the shape of a pocket to optimize the weight of the structure, which consists of a thin skin (AISI304) and a thick skeleton (AISI630). The residual stresses at the surface of the weldments were measured using the instrumented indentation method. The residual stresses and melt-pool zone (MPZ) profiles show good agreement between the theoretical and experimental results. Considering the residual stresses, the allowable gap width range of the laser-welded joints for the pocket-shaped specimen was calculated. For a welding joint with gap widths, the longitudinal residual stress values at the yield stress level were observed. Melt-pool zone profiles described by the underfill and penetration depth also depend upon the gap size. | - |
dc.language | English | - |
dc.publisher | Trans Tech Publications Ltd. | - |
dc.title | A study on the effect of gap width on residual stresses of laser-welded dissimilar joints | - |
dc.type | Article | - |
dc.identifier.scopusid | 2-s2.0-33751502260 | - |
dc.type.rims | ART | - |
dc.citation.volume | 326-328 I | - |
dc.citation.issue | 0 | - |
dc.citation.beginningpage | 669 | - |
dc.citation.endingpage | 672 | - |
dc.citation.publicationname | KEY ENGINEERING MATERIALS | - |
dc.contributor.localauthor | Lee, Byung Chai | - |
dc.contributor.nonIdAuthor | Yang, H.S. | - |
dc.subject.keywordAuthor | Dissimilar stainless steel joints | - |
dc.subject.keywordAuthor | FEM | - |
dc.subject.keywordAuthor | Gap width | - |
dc.subject.keywordAuthor | Instrumented indentation technique | - |
dc.subject.keywordAuthor | Melt-pool zone | - |
dc.subject.keywordAuthor | ND-YAG laser welding | - |
dc.subject.keywordAuthor | Pocket shape weldment | - |
dc.subject.keywordAuthor | Residual stress | - |
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