A comparative study on microstructure and mechanical properties near interface for dissimilar materials during conventional V-groove and narrow gap welding

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• 作者：R. Nivas^a ; P.K. Singh^b ; G. Das^c ; S.K. Das^c ; S. Kumar^b ; B. Mahato^c ; K. Sivaprasad^a ; M. Ghosh^c ; ^{ghosh_mnk@yahoo.com} ; ^{mainakg@nmlindia.org}
• 关键词：Dissimilar materials welding ; Structural characterisation ; In-situ tensile test ; Residual stress ; Work hardening
• 刊名：Journal of Manufacturing Processes
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：25
• 期：Complete
• 页码：274-283
• 全文大小：4157 K
• 卷排序：25

文摘

Low alloy steel and 304LN stainless steel was joined by conventional V-groove welding and narrow gap welding. In both welds IN82 was used as consumable. Comparing with existing literature reports, unique aspects of the manuscript may be described as: Detail exploration and explaining microstructural changes across the fusion boundary between LAS and Ni-base alloy using different characterisation techniques like microscopy and X-ray diffraction. Understanding the sequence of deformation and identifying the weakest region across fusion boundary through in-situ tensile test; this was complimented to micro-hardness profile to endorse the inference. Evaluation of work hardening behaviour near FB-1 during plastic deformation under uni-axial loading for a highly heterogeneous assembly. Co-relation between microstructure and mechanical properties.