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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Effect of Heat Index on Microstructure and Mechanical Behavior of Friction Stir Processed AZ31
verfasst von : Wei Yuan, Rajiv S. Mishra
Erschienen in: Magnesium Technology 2011
Verlag: Springer International Publishing
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Friction stir processing modifies the micro structure and properties of metals through intense plastic deformation. The frictional heat input affects the microstructure evolution and resulting mechanical properties. 2 mm thick commercial AZ31B-H24 Mg alloy was friction stir processed under various process parameter combinations to investigate the effect of heat index on micro structure and properties. Recrystallized grain structure in the nugget region was observed for all processing conditions with decrease in hardness. Results indicate a reduced tensile yield strength and ultimate tensile strength compared to the as-received material in H-temper, but with an improved hardening capacity. The strain hardening behavior of friction stir processed material is discussed.