In this paper,the TIG welding technology is used to perform a plate welding test on 304 stainless steel,and the test results are analyzed from the microstructure and mechanical properties,the optimum welding parameters are selected as welding current of 310 A and welding speed of 13 mm/s.The composition of austenite and ferrite in weld microstructure of welded joint is obtained by metallographic characterization,X-ray fluorescence diffraction and electron backscatter diffraction. According to the optimum welding parameters,the large-scale finite element simulation software ABAQUS is selected,and the TIG welding process is simulated by double ellipsoid heat source model. The weld cross-section morphology obtained by simulation and test are compared,and according to comparison results,the simulation model is optimized to provide reference for the optimization of welding parameters.
关键词
304不锈钢TIG焊接温度场数值模拟
Keywords
304 stainless steeltungsten inert gas weldingtemperature fieldnumerical simulation