Multi-response Optimisation Applied on Friction Stir Processing to Enhanced Wear and Corrosion performance in Al-Si Alloys-Reference-Cited by-同舟云学术

Multi-response Optimisation Applied on Friction Stir Processing to Enhanced Wear and Corrosion performance in Al-Si Alloys

Published:2024-03-20 Issue: Volume: Page:
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Author:

Traiano Denner,Nascimento Silvia Rosa,Lourençato Luciano Augusto,Roca Angel Sánchez,Orozco Mario César Sánchez¹^ORCID,Fals Hipólito Domingo Carvajal

Affiliation:

1. Univeridad de Oriente

Abstract

Eutectic (Al12Si) and hyper-eutectic (Al14Si) Al–Si alloys were processed through friction-stir processing (FSP). These Al-Si alloys' microstructure, microhardness, wear, and corrosion behaviour were studied. FSP led to the fragmentation and uniform distribution of Si and Fe-rich intermetallic phases in the Al matrix. Multi-response optimisation of the friction-stir process of Al–Si alloys was investigated. The optimum FSP parameters were a tool rotation speed of 1100 rpm and a 16 mm/min travel speed for Al12Si alloy. The friction stir processed Al12Si samples exhibit the highest microhardness (93 H_v); the most considerable fragmentation of Si particles and Fe-rich intermetallic phases, with average sizes of 2.82 and 2.07 µm, respectively; and optimal values of coefficient of friction (0.60); and corrosion rate (1.28×10^− 4 mm/y). This work provided a mathematical model to obtain the optimum FSP parameters for producing surfaces in Al12Si alloys with excellent microstructural characteristics, high hardness, and better wear and corrosion resistance.

Publisher

Research Square Platform LLC

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