This paper reports on the experimental investigation of bending and tensile strength of the friction stir processed TIG-welded AA5083-H111 joint. The friction stir processed joint was studied comparatively with the TIG-welded joint (unprocessed joint). The TIG-welded joint was processed using a single-pass friction stir processing technique. The microstructural analysis revealed that the unprocessed joint was dominated with coarse grains while the refined grains dominated the friction stir processed joint. The unprocessed joint consistently failed at the center of the joint during tensile testing while the processed joint failed in different locations of the stir zone. The tensile strength of the unprocessed joint was found to be 47.4% to that of the base metal while that of the processed joint was found to be 76.5% to that of the base metal. The percentage elongation of the processed joint was found to be 82.4% to that of the base metal while that of the unprocessed joint was f...

中文翻译：

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搅拌摩擦氩弧焊AA5083-H111接头弯曲和拉伸强度的实验研究

本文报道了搅拌搅拌处理的TIG焊接AA5083-H111接头的弯曲和拉伸强度的实验研究。搅拌摩擦加工接头与TIG焊接接头（未加工接头）进行了比较研究。TIG焊接接头采用单程摩擦搅拌加工技术进行加工。显微组织分析表明，未加工的接头以粗晶粒占主导，而精制的晶粒则在搅拌摩擦加工的接头中占主导。在拉伸测试过程中，未加工的接头始终在接头中心失效，而已加工的接头在搅拌区的不同位置失效。发现未加工的接头的抗拉强度是母材的抗张强度的47.4％，而加工过的接头的抗张强度是母材的76.5％。