Microwave hybrid heating based optimized joining of SS304/SS316. Issue 13 (3rd October 2021)

• Record Type: Journal Article
• Authors: Pal, Mainak; Kumar, Virinder; Sehgal, Shankar; Kumar, Harmesh; Saxena, Kuldeep K.; Bagha, Ashok K.
• Is Part Of: Materials and manufacturing processes. Volume 36:Issue 13(2021)
• Page Start: 1554
• Page End: 1560
• Publication Date: 2021-10-03
• Subjects: Material -- joining -- microwave -- hybrid -- heating -- filler -- powder -- micro -- hardness -- strength -- optimization; Manufacturing processes -- Periodicals; Materials -- Periodicals; Manufactured Materials; 670.5
• DOI: 10.1080/10426914.2020.1854469
• Languages: English
• ISSNs: 1042-6914

Abstract

ABSTRACT: In this study, the microwave hybrid heating process has been exploited to produce optimized joints of SS304/SS316. Three input parameters: materials of the specimens to be joined (X), grain-size of filler powder (Y), and processing time (Z) have been investigated to see their effects on two major joint properties: micro-hardness (P) and micro-tensile strength (Q). Welded joints of specimens have gone through mechanical characterization via Vicker's micro-hardness tests and also the micro-tensile strength examinations. Outcomes have been used further for finding optimal settings of input parameters to achieve the best mechanical properties of joints. Grain-size of filler material is the most significant parameter; followed by specimen material. On the other hand, process time has little influence on output parameters within the small incremental time range of only 60 s considered during this work. SS304-SS304 (X1 ) specimen materials with 70 nm (Y1 ) filler powder at 360 s (Z1 ) processing time input settings help in achieving optimal micro-hardness (Poptimal ) and micro-tensile strength (Qoptimal ). Microstructure test results of the developed joints reveal the formation of dense metallic microstructures across the joining region which justifies the reason for higher micro-hardness and micro-tensile strength of the joint region.