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Heterogeneity of crystallographic texture in friction stir welds of aluminum

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Abstract

Over the past decade, friction stir welding (FSW) has rapidly become an important industrial joining process, particularly in the aluminum industry. Included among the advantages of FSW are such important attributes as improved weld strength and the elimination of cracking and porosity. During the friction stir process, the metal undergoes a tortuous deformation path that is not yet fully understood. The crystallographic texture that evolves during FSW contains sharp spatial gradients that undoubtedly influence the integrity of the weld and surrounding region in subsequent performance. The locally measured textures are discussed in the context of the material flow required to produce such textures, ultimately resulting in an estimate of the flow field present during FSW.

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Field, D.P., Nelson, T.W., Hovanski, Y. et al. Heterogeneity of crystallographic texture in friction stir welds of aluminum. Metall Mater Trans A 32, 2869–2877 (2001). https://doi.org/10.1007/s11661-001-1037-2

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