|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Friction Stir Welding and Processing IX
||Corrosion Fatigue Performance of Friction Stir Processed Magnesium Alloy AZ31B-H24: A Comparative Evaluation
||Daniel Tapp, Joseph McDermid, Joseph Kish
|On-Site Speaker (Planned)
Load-controlled fatigue experiments were conducted in both laboratory air and in a near-neutral salt fog environment to delineate the effect of friction stir processing on the atmospheric corrosion fatigue performance of magnesium alloy AZ31B-H24 sheet product. Compact tensile (CT) specimens were utilized to restrict the crack initiation to the metallurgical weld zone of interest. The CT samples were oriented such that the loading axis was perpendicular to the friction stir weld direction yet parallel to the rolling direction of the sheet product. The fatigue performance of non-stir processed CT samples in both environments was included as the comparative basis. Results have revealed a significance reduction in the number of cycles to failure at each stress level tested in the near-neutral salt fog (0.05 wt.% NaCl) relative to laboratory air for both stir processed and non-stir processed specimens.
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