Role of Matrix Microstructure in Governing the Mechanical Behavior and Corrosion Response of Two Magnesium Alloy Metal Matrix Composites

Jayalakshmi, S and Singh, RA and Chen, X and Konovalov, S and Srivatsan, TS and Seshan, S and Gupta, M (2020) Role of Matrix Microstructure in Governing the Mechanical Behavior and Corrosion Response of Two Magnesium Alloy Metal Matrix Composites. In: JOM, 72 (8). pp. 2880-2891.

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Abstract

The microstructure, mechanical properties, and corrosion resistance of two popular magnesium cast alloys, namely Mg�Al�Mn alloy (AM100) and Mg�Zn�Cu alloy (ZC63), and their saffil alumina short-fiber-reinforced composites have been investigated. The results reveal that the mechanical behavior of the magnesium alloy metal matrix composites (Mg-MMCs) was influenced by the nature of the base matrix and the microstructural phases present. The behavior of the composites also depended on the fiber volume fraction. The composites of the two alloys showed an improvement in tensile strength at high temperatures compared with the unreinforced counterpart. Under impact loading and salt spray corrosion conditions, the composites exhibited observable degradation in properties. Under corrosion, the distribution of microstructural phases essentially determined the corrosion resistance of the matrix. The effect of the inherent nature of the alloy matrix in controlling both the mechanical properties and corrosion behavior of the Mg-MMCs is thoroughly discussed. © 2020, The Minerals, Metals & Materials Society.

Item Type:	Journal Article
Publication:	JOM
Publisher:	Springer
Additional Information:	Copy right for this article belongs to Springer
Keywords:	Alumina; Aluminum corrosion; Aluminum oxide; Atmospheric corrosion; Copper alloys; Copper corrosion; Corrosion resistance; Corrosion resistant alloys; Corrosive effects; Fiber reinforced plastics; Magnesium alloys; Manganese alloys; Microstructure; Seawater corrosion; Tensile strength, Corrosion behavior; Fiber volume fractions; High temperature; Matrix microstructure; Mechanical behavior; Microstructural phasis; Salt spray corrosion; Short-fiber-reinforced composites, Metallic matrix composites
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	20 Oct 2020 10:29
Last Modified:	20 Oct 2020 10:29
URI:	http://eprints.iisc.ac.in/id/eprint/65379

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