| 摘要: |
| 研究了0.1 mm 316 L不锈钢薄板脉冲激光焊工艺参数特征,分析了接头的组织和力学性能。结果表明:0.1 mm 316 L不锈钢薄板脉冲激光焊时适宜用小电流、大脉宽、高速度、高频率;焊缝中心为细小的等轴晶,边缘是细小的柱状晶;焊接接头的抗拉强度可达到母材的95%,伸长率可达到母材的85%。 |
| 关键词: 不锈钢薄板 脉冲激光焊 工艺参数 组织特征 |
| DOI： |
| 分类号: |
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| Welding parameters and microstructure of pulse laser welded 316 L stainless steel sheet |
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YAN Xiao-jun, YANG Da-zhi, LIU Li-ming
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Department of Materials Engineering, Dalian University of Technology, Dalian 116024, China
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| Abstract: |
| Welding parameters of pulse laser weldt 316 L stainlesssteel sheet have been studied,and the mierostructure and mechanicalproperties of weldments have been investigeted.The results show that small current,long pulse duration,high welding speed and high frequency should be used in order to form a good weldments.Examination of the micrographs reveals that mainly cellular or celluar-dendrites are formedin the outer patter of the weld metal and equiaxed dendrites are found at the central portion of weld metal.The ultimate tensile strength of weld-ments is up to 95 per cent of the base metal,and the elongation of weld-ments is up to 85 per cent of the base metal. |
| Key words: 316 L stainless steel sheet pulse laser welding weldingparameters microstructural characteristics |
