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首页> 外文期刊>Journal of Materials Engineering and Performance >Laser Welding of 3 mm Thick Laser-Cut AISI 304 Stainless Steel Sheet
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Laser Welding of 3 mm Thick Laser-Cut AISI 304 Stainless Steel Sheet

机译：3毫米厚激光切割AISI 304不锈钢薄板的激光焊接

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摘要

The objective of the present work was to study the laser weldability of laser-cut 3 mm thick AISI 304 austenitic stainless steel sheet (using oxygen as an assist gas). For minimizing heat input during laser cutting, which is an important factor influencing the thickness of the oxide layer on the cut surface, laser cutting was performed in pulsed mode. The results of the study demonstrated that although the laser welding of laser-cut specimens did not result in the formation of weld defects, the resultant laser weldments exhibited reduced ductility with respect to base metal and bead-on-plate laser weldments. Laser-cut and laser-welded specimens also displayed higher notch sensitivity than the base metal. However, laser-cut and laser-welded specimens still possessed enough ductility to pass guided bend tests.
机译：本工作的目的是研究激光切割的3毫米厚AISI 304奥氏体不锈钢薄板（使用氧气作为辅助气体）的激光焊接性。为了使激光切割期间的热量输入最小化，这是影响切割表面上氧化物层厚度的重要因素，因此以脉冲模式进行激光切割。研究结果表明，尽管激光切割试样的激光焊接没有导致焊接缺陷的形成，但相对于贱金属和平板焊道激光焊接，所得的激光焊接件的延展性降低。激光切割和激光焊接的样品的缺口敏感性也比母材高。但是，激光切割和激光焊接的样品仍具有足够的延展性，可以通过引导弯曲测试。

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