Effect of Grain Refiner on Microstructure of Semi-Solid A356 Aluminium Alloy

Mohd Nasir Laila Masrur; Abu Seman Anasyida; Zuhailawati Hussain

doi:10.4028/www.scientific.net/AMR.1024.251

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1024Effect of Grain Refiner on Microstructure of...

Effect of Grain Refiner on Microstructure of Semi-Solid A356 Aluminium Alloy

Abstract:

Grain refining has been studied in the semi-solid-metal (SSM) casting by addition of master alloy Al-5Ti-1B using inclined slope. A356 aluminium alloy was melted at 850 °C and poured at 660 °C on the inclined slope into the steel mould. Grain refiner was added in various percentages of 0.2%, 0.5% and 1.0% in A356 aluminium alloy melt. Microstructure and microhardness were characterized using optical microscope and Vicker’s microhardness tester. The addition of master alloy Al-5Ti-1B not only refined but also increased the globularity of the primary α-Al particles. The higher hardness was achieved with 1% addition of master alloy Al-5Ti-1B.

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Periodical:

Advanced Materials Research (Volume 1024)

Pages:

251-254

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1024.251

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Online since:

August 2014

Authors:

Mohd Nasir Laila Masrur, Abu Seman Anasyida*, Zuhailawati Hussain

Keywords:

A356 Aluminum Alloy, Globular Structure, Grain Refiner, Semi-Solid Casting

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