Effect of chill casting on dry sand abrasive wear behaviour of Aluminium LM6 reinforced with albite particulate metal matrix composite

Effect of chill casting on dry sand abrasive wear behaviour of Aluminium LM6 reinforced with albite particulate metal matrix composite

•Al LM6 alloy is a eutectic alloy.•Most preferable alloy for automotive and aeronautical applications.•Copper chill results in rapidly solidifying of molten metal.•Wear rate relies on shape and size of sand. The present investigation was carried to study wear behaviour of composite synthesized using...

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Bibliographic Details
Published in:Materials today : proceedings Vol. 46; pp. 9008 - 9012
Main Authors: Huq, Mohammed Shoaib Ul, Shaik, Anjum Anwar, Chandra, Batluri Tilak
Format: Journal Article
Language:English
Published: Elsevier Ltd 2021
Subjects:
Albite
Copper chill
Dry sand abrasive
LM6
Volumetric heat capacity (VHC)
Wear
Albite
Copper chill
LM6
Dry sand abrasive
Wear
Volumetric heat capacity (VHC)
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Summary:•Al LM6 alloy is a eutectic alloy.•Most preferable alloy for automotive and aeronautical applications.•Copper chill results in rapidly solidifying of molten metal.•Wear rate relies on shape and size of sand. The present investigation was carried to study wear behaviour of composite synthesized using stir casting method. The study was emphasized in 2 different methods namely As-cast and chill casting process. LM6, an Aluminium alloy, is used as matrix and Albite, containing oxide of Si as major alloying element, used as reinforcement. Copper was employed to study its thermal influence on chill casting process. Composites were prepared varying the composition of reinforcement in terms of weight fraction between 3 and 12 with increment of 3 wt%. Microstructure analysis revealed improved hardness and resistance offered by both matrix and reinforcement against abrasive wear for chill casting. The specimens were prepared as per ASTM G65-81 standard. Sand abrasive wear studies conducted by varying load and keeping RPM constant, the silica sand is used as abrasive media. Results attested and elucidated that composites exhibited increased wear resistance with increase in weight percentages of reinforcement irrespective of methods of casting adopted. However, chill casted composites showed improved wear rate in comparison with As-casted composites. The SEM graphs reveal chill casted MMCs offered greater wear resistance over as casted MMCs.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2021.05.379