Investigation on underwater friction stir processing of AZ-61 magnesium alloy

• Main Authors: Ling, Min, Mehrez, Sadok, Vignesh, R. Vaira, Mohd. Zain, Azlan, Paidar, Moslem, Kharche, Nitin A., Mohanavel, V.
• Format: Article
• Published: Elsevier Ltd 2023
• Subjects: TJ Mechanical engineering and machinery
• Online Access: http://eprints.utm.my/105643/; http://dx.doi.org/10.1016/j.mtcomm.2023.106885

In the present investigation, the AZ61/(CeO2 + ZrO2)p surface composite is developed via friction stir processing. The impact of the welding ambience (air and water) on the metallurgical and mechanical performance of the composites were elucidated. It was found that using water media during process is conducive to improving the structure and mechanical properties of the joints. Increasing the cooling rate during the process refined the grains of the composites and thereby improved the hardness, shear punching strength, and wear rate of the composite. Grains refinement and reduction in precipitate size in the stir zone of the water-cooled sample are likely responsible for this occurrence.