In order to explore the effect of laser selective melting of 316L stainless steel molten pool on mechanical properties,12 samples were printed by laser selective melting technique with 4 groups of dif-ferent process parameters,and the samples were subj ected to room temperature tensile and microstruc-tural characterization,and the extraction of melt pool area based on Matlab toolbox as well as improved Canny algorithm was proposed,while the variation curve of molten pool area of each group and the corre-sponding tensile strength of each group were observed.The results show that the molten pool area is gradually increasing,and tensile strength of the samples increased accordingly,showing the same trend. The tensile strength reached its maximum value of 509.46 MPa when the molten pool area reached its maximum value of 0.042 mm2 .
关键词
激光选区熔化/316/L不锈钢/Canny算法/熔池面积/抗拉强度
Key words
laser selective melting/316L stainless steel/Canny algorithm/molten pool area/tensile strength
万方数据