Scholarlink

<p>Friction Stir Welding (FSW) is a reliable solid-state joining technique for aluminium alloys, where conventional fusion welding often causes porosity, solidification cracking, and excessive heat-affected softening. The present study investigates the influence of tool pin geometry, shoulder-to-pin diameter ratio, rotational speed, and welding speed on the mechanical performance of friction stir welded AA3103 aluminium alloy. Twenty-seven experimental trials were conducted using a Taguchi L9 orthogonal array, repeated for three tool pin profiles: circular, square, and triangular. Three shoulder-to-pin diameter ratios (D/d = 3, 4, 5), rotational speeds (355, 710, and 1400 RPM), and welding speeds (20, 40, and 80&#xa0;mm/min) were considered. Mechanical testing was performed according to ASTM E8 to determine yield strength, ultimate tensile strength (UTS), and percentage elongation. Statistical evaluation using Signal-to-Noise ratio and General Linear Model based ANOVA revealed that the shoulder-to-pin diameter ratio significantly influences UTS and YS at a 95% confidence level (<i>p</i> &lt; 0.05). The maximum UTS of 174.37&#xa0;MPa was achieved using a square pin at D/d = 3, 355 RPM, and 20&#xa0;mm/min, while maximum elongation of 26% was obtained with a triangular pin at higher rotational speed. Regression models showed acceptable predictive accuracy for process optimization.</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

Effects of welding parameters optimization on the tensile performance of friction stir welded AA3103 Al alloy

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月2日

查看全文
  • Ganesh Jagannath Pagar,
  • Gajanan N. Shelke

摘要

Friction Stir Welding (FSW) is a reliable solid-state joining technique for aluminium alloys, where conventional fusion welding often causes porosity, solidification cracking, and excessive heat-affected softening. The present study investigates the influence of tool pin geometry, shoulder-to-pin diameter ratio, rotational speed, and welding speed on the mechanical performance of friction stir welded AA3103 aluminium alloy. Twenty-seven experimental trials were conducted using a Taguchi L9 orthogonal array, repeated for three tool pin profiles: circular, square, and triangular. Three shoulder-to-pin diameter ratios (D/d = 3, 4, 5), rotational speeds (355, 710, and 1400 RPM), and welding speeds (20, 40, and 80 mm/min) were considered. Mechanical testing was performed according to ASTM E8 to determine yield strength, ultimate tensile strength (UTS), and percentage elongation. Statistical evaluation using Signal-to-Noise ratio and General Linear Model based ANOVA revealed that the shoulder-to-pin diameter ratio significantly influences UTS and YS at a 95% confidence level (p < 0.05). The maximum UTS of 174.37 MPa was achieved using a square pin at D/d = 3, 355 RPM, and 20 mm/min, while maximum elongation of 26% was obtained with a triangular pin at higher rotational speed. Regression models showed acceptable predictive accuracy for process optimization.