Abstract The candidacy of ninth earth abundant material, titanium is supreme when it comes to the higher strength to weight ratio, and higher corrosive resistance. Next generation of jet engines for aerospace industry clearly depends on the manufacturability and improved ability of titanium alloys that can withstand the high temperatures. However, the primary sheets, plates, billets, ingots, or rods are of limited sizes that need to be either machined or welded in order to produce a desired structure with optimal the buy-to-fly ratio. This article primarily summarizes the research in the field of joining of titanium sheets with a direct focus on friction stir welding (FSW). The industrial requirements, whether to weld similar or dissimilar titanium alloys, or of different thicknesses, or even with composites, are often challenged by the selection of the tool, position of the alloying sheets, cooling of the weld nugget, material composition, complex material flow in the wake of the rotating, and traversing tool etc. This article provides a review of FSW of similar and dissimilar titanium alloys focusing on surface, and subsurface properties, such as microstructural, and mechanical properties, texture evolution, current challenges summarizing a possible remedy, encompassing the recent development and research in the field.

中文翻译：

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钛合金搅拌摩擦焊：综述

摘要 作为第九大地丰富材料的候选材料，钛具有更高的强度重量比和更高的耐腐蚀性。航空航天工业的下一代喷气发动机显然取决于钛合金耐高温的可制造性和改进的能力。然而，初级板材、板材、坯料、锭或棒的尺寸有限，需要进行机加工或焊接，以生产具有最佳购买与飞行比的所需结构。本文主要总结了钛板连接领域的研究，直接关注搅拌摩擦焊（FSW）。工业要求，无论是焊接相似或不同的钛合金，还是不同厚度，甚至复合材料，