To investigate the potential of KTIG-MIG coupling welding in improving welding efficiency and quality for medium-thickness Q235B low-carbon steel plates,this study specifically analyzes the microstructural characteris...To investigate the potential of KTIG-MIG coupling welding in improving welding efficiency and quality for medium-thickness Q235B low-carbon steel plates,this study specifically analyzes the microstructural characteristics of three distinct regions in butt joints-the base metal(BM),heat-affected zone(HAZ),and weld metal zone(WMZ)-while simultaneously conducting comprehensive mechanical property testing on the welded joints.The test results of mechanical properties are combined with the data of microstructure analysis.The relationship between mechanical properties and microstructure of the WMZ of the butt joint is found.The results show that the microstructure of weld zone does not change significantly with the increase of heat input,but the grain structure of fusion zone and heat affected zone increases gradually.The tensile properties of welded joints are better than those of base materials under different heat input conditions.展开更多
Effects of diffusion welding parameters on strength of welded joint based on particle reinforced alumini- um matrix composite Al2O3p/6061Al were studied by comparing with aluminium matrix alloy,Mecha- nism for ...Effects of diffusion welding parameters on strength of welded joint based on particle reinforced alumini- um matrix composite Al2O3p/6061Al were studied by comparing with aluminium matrix alloy,Mecha- nism for the loss of joint strength was analyzed.It was pointed out that the key processing parameters affecting the strength of joint was the welding temperature.The high quality joint can be successfully obtained with appropriate diffusion welding parameters.展开更多
基金supported by the National Natural Science Foundation of China(51605103)Key Projects of Science and Technology Research Plan of Hubei Provincial Department of Education(D20221306)Key Project of Hubei Provincial Science and Technology Department(2020BAB055).
文摘To investigate the potential of KTIG-MIG coupling welding in improving welding efficiency and quality for medium-thickness Q235B low-carbon steel plates,this study specifically analyzes the microstructural characteristics of three distinct regions in butt joints-the base metal(BM),heat-affected zone(HAZ),and weld metal zone(WMZ)-while simultaneously conducting comprehensive mechanical property testing on the welded joints.The test results of mechanical properties are combined with the data of microstructure analysis.The relationship between mechanical properties and microstructure of the WMZ of the butt joint is found.The results show that the microstructure of weld zone does not change significantly with the increase of heat input,but the grain structure of fusion zone and heat affected zone increases gradually.The tensile properties of welded joints are better than those of base materials under different heat input conditions.
文摘Effects of diffusion welding parameters on strength of welded joint based on particle reinforced alumini- um matrix composite Al2O3p/6061Al were studied by comparing with aluminium matrix alloy,Mecha- nism for the loss of joint strength was analyzed.It was pointed out that the key processing parameters affecting the strength of joint was the welding temperature.The high quality joint can be successfully obtained with appropriate diffusion welding parameters.
