Equal channel angular pressing die design through finite element analysis method for non-strain hardening material

Bhandari, Rahul; Biswas, Prosanta; Pathania, Ajay; Mallik, Manab; Mondal, Manas Kumar

doi:10.1080/00084433.2022.2046905

Cited by 3 publications

(1 citation statement)

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“…In the unmodified hypoeutectic Al-Si alloys, eutectic silicon's needle-shape generates internal stress and leads to crack formation and intimate fractures [32,33]. Consequently, researchers have extensively investigated modifying the microstructural morphology of the Al-Si alloys, with mechanical working, heat treatment, electromagnetic stirring, and chemical modification being the most commonly used techniques [34,35]. Heat treatment and mechanical working modifications are time-consuming and unsuitable for bulk production, resulting in increased costs of finished components and products.…”

Section: Introductionmentioning

confidence: 99%

Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy

Biswas

Das

et al. 2023

Materials Science and Technology

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This study utilised the gravity casting method to modify hypoeutectic Al-7.6Si alloys with Zr at varying weight percentages (0.1%, 0.2%, and 0.3%). The unmodified alloy typically consists of a needle or platelike eutectic silicon within the dendritic α-Al phase. The addition of Zr increases the liquidus temperature of the alloy and results in the formation of ZrSi and ZrSi2 compounds, which act as nucleation sites for both the eutectic Si and α-Al grains. As a result, the needle or platelike eutectic silicon transforms into a fibrous structure with a more uniform distribution, and the α-Al phase becomes finer and globular. These microstructural changes lead to improved bulk hardness, ductility, and mechanical properties of the alloy.

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