Effect of Friction Stir Welding Process Parameters on the Residual Stress Development in Ti-6Al-4V Welds
Friction Stir Welding (FSW) is an innovative solid-state joining technique, which has been quite successful in joining Al-alloys, but has not been widely used for Ti-alloys due to the difficulty in finding a non-wearable tool material that can withstand the high stresses and temperatures (>1000˚C) during welding. There has been a growing interest in the use of FSW to join aerospace titanium structures, especially to replace other joining technologies (e.g. electron beam welding). Nonetheless, the stirring action, in addition to the transient thermal cycle, leads to the development of strong residual stresses within the weld. In this investigation, we aim to continue our previous investigations #1-02-67 and #1-02-88 by investigating the effect of process parameters mainly the rotational speed on the residual stress development in fine grained Ti-6Al-4V friction stir welds. In addition, comb specimens will be made to measure the d0-variation across the weld region. This proposed investigation is novel as the work in the literature is primarily focused on Al-alloy friction stir welds, with limited studies investigating the residual stress development in Ti-alloys friction stir we
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BAKER Sarah; ATTALLAH Moataz; KARL Christoph; PARIMI Lakshmi Lavanya and PIRLING Thilo. (2013). Effect of Friction Stir Welding Process Parameters on the Residual Stress Development in Ti-6Al-4V Welds. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-138
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