Corrosion behavior of aluminium- molybdenum surface composites developed by friction stir processing

Abstract

Effect of molybdenum reinforcement particles on the corrosion resistance of the Al-Mo surface composite prepared using single pass and double pass friction stir processing is studied. Surface composites exhibit better corrosion resistance with higher corrosion potential and lower corrosion rate based on the potentiodynamic testing. Addition of more Mo particles using second groove further increases corrosion resistance. Second processing pass improves the corrosion resistance due to more homogeneously distributed fine Mo particles. Surface composites show charge transfer controlled corrosion behavior whereas the base alloy exhibited mixed corrosion behavior. Pitting is reduced where Mo particles are present in the surface composites.

Date
Dec 16, 2019 — Dec 18, 2019
Location
Club-O7 Convention Center, Ahmedabad
Ahmedabad, Gujarat, India
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Mahesh V. P.
Ph.D. Scholar

Mahesh works on surface composites fabrication using friction stir processing. His major focus is on the electrochemical and mechanical behavior of Aluminium matrix surface composites. He also performs tribological analysis of metal matrix composites. Other major fields of interest are liquid metal stir casting, centrifugal casting and functionally graded materials (FGM).