Scholarlink

<p>In this article, the grooves of different dimensions and shapes on aluminum alloys were repaired by friction stir technology, and the mechanical properties and microstructure of the repaired grooves were studied. The simulation model of friction surfacing additive repair was established, and the appropriate process parameter range was at rotational and traverse speeds of 1500&#xa0;rpm and 600–900&#xa0;mm/min, respectively. It was found that repair effect was affected by the width and shape of the groove, and the grooves repaired by friction surfacing additive repair process showed a dual-layer fracture mode. The dimension of the narrow grooves had a large effect on the tensile strength of friction stir welding repair process, and the tensile strength of the samples repaired reached 79.4% of that of the base material. The specimens repaired by the friction stir welding process fatigue fractured at the base metal, indicating a high quality of repair.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Research on repair process and mechanical properties of surface grooves on aluminum alloys based on friction stir technology

  • 期刊论文

  • 发表日期：

    2025年6月20日

查看全文
  • Lei Qiu,
  • Guo-Qin Sun,
  • Hong-Hao Wang,
  • Ze-Xin Zhang,
  • Xiao-Qing Jiang,
  • Shu-Jun Chen

摘要

In this article, the grooves of different dimensions and shapes on aluminum alloys were repaired by friction stir technology, and the mechanical properties and microstructure of the repaired grooves were studied. The simulation model of friction surfacing additive repair was established, and the appropriate process parameter range was at rotational and traverse speeds of 1500 rpm and 600–900 mm/min, respectively. It was found that repair effect was affected by the width and shape of the groove, and the grooves repaired by friction surfacing additive repair process showed a dual-layer fracture mode. The dimension of the narrow grooves had a large effect on the tensile strength of friction stir welding repair process, and the tensile strength of the samples repaired reached 79.4% of that of the base material. The specimens repaired by the friction stir welding process fatigue fractured at the base metal, indicating a high quality of repair.