Study on wear performance of heat treated thixoformed aluminium alloy

Azhar, Siti Hajar (2022) Study on wear performance of heat treated thixoformed aluminium alloy. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Many industrial components made of aluminium alloys LM27 or A357 are subjected to automotive and aerospace industry especially aluminium alloys. Due to this situation, this report is to investigates the wear performance of thixoformed aluminium alloy after heat treatment especially T6. The T6 heat treatment consists of three steps: the first is a solution treatment in which the alloy is heated for 8 hours at 540°C, the second is a 5 minute quenching in room temperature, and the final step is an ageing process in which the alloy is heated for 4 hours at 160°C to allow precipitation to occur. Furthermore, the parameters for this investigation include stirring time and speed during feedstock casting. This investigate will analyse the differences in wear performance of aluminium alloys between thixoforming and conventional casting, evaluate the use of heat treatment during thixoforming process influences wear performance and identify the microstructure evaluation of aluminium alloy in thixoforming and conventional casting. However, the use of heat-treated particle, injection of particles and the stirring system improved the wettability within the aluminium melt. In order to study the wear performance, wear test will be conducted under pin-on-disc with ASTM G99 standard. LM27 matrix grain size is recognised by electron scanning microscopy (SEM) and XRD analysis for the data on crystal structure and phase

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