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中文摘要：
对加Al质量分数为4％的304、2％的316L不锈钢热轧板材的焊接性能进行了研究.采用手工氩弧焊（TIG）的焊接方法,利用光学显微镜对焊缝的显微组织进行分析,利用电子探针（EMPA）分析焊接母材的元素分布,并对焊接接头进行力学性能测试.组织和力学性能的研究结果表明：含铝304和含铝316L合金热轧板分别选用ER308L,ER316L作为焊接材料,经TIG焊接后,焊缝无裂纹、气孔等缺陷,接头具有良好的强度和塑性,焊接接头力学性能接近于其母材;热影响区组织与母材组织基本一致,焊缝与母材熔合良好,组织良好,加铝304和316L不锈钢具有良好的焊接性能.
英文摘要：
The weldability of Al mass fraction 4% 304, 2 % 316L stainless steel hot-rolled sheet was investigated. By using manually TIG, microstructure of weld joint was analyzed by optical microscopy, the distribution elements of welding base metal was measured by electron microprobe （EMPA） , mechanical properties of welded joints was also tested. The investigations of microstructure and mechanical properties show that the aluminum-containing 304 and 316L alloy hot-rolled plates are selected ER308L, ER316L as welding materials, after TIG welded, the weld area has no cracks, gas porosities and other defects, the joint has good strength and ductility, the mechanical properties of the weld joint is similar with the base metal. Heat-affected zone and base metal organization is basically the same, the fusion is well between the weld area and base metal, the microstructure is good, adding aluminum 304 and 316L stainless steel with good weldability.
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