Orthogonal Optimization of Resistance Spot Welding Parameters and Microstructure and Mechanical Property of Aluminum Alloy/High Strength Steel Joint

2021 ◽  
Author(s):  
Lei Wang ◽  
Yingying Che ◽  
Di Wu ◽  
Hongmei Li ◽  
Daqian Sun ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Aluminum Alloy ◽  
Resistance Spot Welding ◽  
High Strength Steel ◽  
Spot Welding ◽  
High Strength ◽  
Welding Parameters ◽  
Steel Joint ◽  
Orthogonal Optimization ◽  
Microstructure And Mechanical Property

scholarly journals Effect of Resistance Spot Welding Parameters on AA1100 Aluminum Alloy and SGACD Zinc coated Lap Joint Properties

2015 ◽  
Vol 3 (1) ◽  
pp. 153-160 ◽  
Author(s):  
Sakchai Chantasri ◽  
Pramote Poonnayom ◽  
Jesada Kaewwichit ◽  
Waraporn Roybang ◽  
Kittipong Kimapong
Keyword(s):  
Aluminum Alloy ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Parameters ◽  
Lap Joint ◽  
Resistance Spot ◽  
Joint Properties ◽  
Aa1100 Aluminum Alloy

scholarly journals JOINING THE COMBINATION OF AHSS STEEL AND HSLA STEEL BY RESISTANCE SPOT WELDING

2013 ◽  
Vol 7 (2) ◽  
pp. 75-78 ◽  
Author(s):  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Ivan Gajdoš
Keyword(s):  
Fuel Consumption ◽  
Welded Joints ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
High Strength ◽  
Quality Analysis ◽  
Vehicle Body ◽  
Welding Parameters ◽  
Resistance Spot ◽  
Ahss Steel

Abstract The paper deals with the optimization of parameters of resistance spot welding and quality analysis of welded joints made by combination of galvanized Advanced High Strength Steel and High Strength Low Alloy steel. It is an advanced material combination utilized in automotive industry to reduce weight of the vehicle body and consequently lowering the fuel consumption to achieve the lowest possible fuel consumption, high active and passive safety of passengers while decreasing the amount of emission. The quality of welded joints was evaluated by destructive tests and non-destructive tests. The shear tensile test according to STN 05 1122 standard was used. Some samples were prepared for metallographic analysis, where the influence of the welding parameters on the structure of welded joint and occurrence of pores in the weld metal caused by evaporation of zinc from the coating was observed.

Hot Stamping High Strength Steel Spot Welding Technology and Quality Evaluation of Welding Joint

2014 ◽  
Vol 1063 ◽  
pp. 181-185
Author(s):  
Su Feng Hao ◽  
Zhong De Shan ◽  
Shu Jun Chen ◽  
Chao Jiang
Keyword(s):  
High Strength Steel ◽  
Spot Welding ◽  
Quality Evaluation ◽  
Hot Stamping ◽  
High Strength ◽  
Interfacial Fracture ◽  
Welding Parameters ◽  
Local Cooling ◽  
Welding Joint ◽  
Pull Out

The heterogeneity of microstructure and mechanical performance of welding joints were affected by unique material properties such as high resistivity and low thermal conductivity, instantaneous high temperature of spot welding thermal cycle, and uneven local cooling rate. Because of ultra high strength of hot stamping parts, the welding joint is more inclined to fail as the failure mode of interfacial fracture, the traditional critical nugget formula fell down. Through designing orthogonal experiment, the effect of different welding parameters on joint performance was analyzed, the optimized welding process was obtained; on account of the quality evaluation of welding joint, nugget spherical mode was built to separately analyze the stress condition of welding joint in the failure modes of interfacial fracture and nugget pull-out, the new evaluation criterion aimed at high strength steel was established. Two kinds of 1.2 mm and 2.0 mm steels were used to validate the critical weld diameter. Results showed that the critical formula could accurately evaluate failure of the weld joints.

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