Effects of gravity on mechanical properties of GTA welded joints |
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| Affiliation: | 1. School of Information Science and Technology, Sun Yat-sen University, Guangzhou 510006, China;2. Research Institute of Sun Yat-sen University in Shenzhen, Shenzhen 518057, China;3. School of Software, Sun Yat-sen University, Guangzhou 510006, China;1. CSIR — National Laser Center, Pretoria, South Africa;2. Department of Mechanical Engineering, Cape Peninsula University of Technology, Cape Town, South Africa;3. Applied Mathematics Division, Department of Mathematical Sciences, Stellenbosch University, Stellenbosch, South Africa;4. Department of Mechanical Engineering, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa |
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| Abstract: | Stainless steel alloy 316 weld samples were subjected to spot gas tungsten arc welding at 1G (G = 9.8 m/s2) and 3.6G accelerations. The cross sections of the fusion zones were polished, etched, and measured in order to perform measurements on the microstructure. Measurement and observation results indicated that increasing in buoyancy driven flow produced wider but shallower welds during spot GTA welding. Tensile testing showed no noticeable differences in peak loads between samples welded at 1G and 3.6G. Tensile ductility was lightly less for the 3.6G samples. |
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| Keywords: | GTA welding Gravity Tensile test |
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