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Influence of Ca+Bi on tensile and strain hardening behaviour of AZ91 alloy

Majhi, J and Mondal, AK and Basu, A and Dieringa, H and Kumar, S (2022) Influence of Ca+Bi on tensile and strain hardening behaviour of AZ91 alloy. In: Materials Science and Technology (United Kingdom), 38 (6). pp. 377-389.

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Official URL: https://doi.org/10.1080/02670836.2022.2045546


The influence of Ca + Bi on the tensile and strain hardening behaviour of the AZ91 alloy at ambient and elevated temperatures have been examined. The values of YS are higher, and ductility is lower of all the modified alloys. The UTS of the modified AZ91 alloys is lower except at 473 K. The UTS values decrease with an increase in test temperature for all the alloys. The improved YS of the modified alloys is owing to reduced grain size. The brittle Mg3Bi2, Al2Ca and Bi3Ca5 phases in the modified alloys reduce their UTS and ductility. The transgranular cleavage fracture at 298 K changes to quasi-cleavage fracture at 473 K. Several dislocations piled up around the β-Mg17Al12 and Al2Ca phases are seen. © 2022 Institute of Materials, Minerals and Mining.

Item Type: Journal Article
Publication: Materials Science and Technology (United Kingdom)
Publisher: Taylor and Francis Ltd.
Additional Information: The copyright for this article belongs to Taylor and Francis Ltd.
Keywords: Aluminum alloys; Binary alloys; Bismuth alloys; Calcium alloys; Ductility; Magnesium alloys; Squeeze casting; Textures, Ambients; AZ91 alloy; Cleavage fracture; Elevated temperature; Grainsize; Quasi cleavage fracture; Strain hardening behavior; Tensile deformation; Test temperatures; Transgranular, Strain hardening
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 13 May 2022 16:28
Last Modified: 13 May 2022 16:28
URI: https://eprints.iisc.ac.in/id/eprint/71645

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