Room-Temperature Single-Step Production of Ultrafine-Grained Bulk Metallic Sheets From Al Powder

Pariyar, A and Vu, VQ and Kailas, SV and Toth, LS (2023) Room-Temperature Single-Step Production of Ultrafine-Grained Bulk Metallic Sheets From Al Powder. In: Journal of Manufacturing Science and Engineering, 145 (10).

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Abstract

Obtaining fully dense products with high strength in one step at room temperature by powder metallurgy (PM) is generally not possible. However, doing so would reduce manufacturing and energy costs substantially. In this work, we have attempted to achieve this on commercially pure aluminum by utilizing the friction-assisted lateral extrusion process (FALEP), which has the capability of producing sheets from bulk or powder metal in a single step, by applying large shear strain. The texture, microstructure, and mechanical properties of the fully compacted powder sample were examined and compared to the bulk sheet's properties obtained also by FALEP. The powder-FALEP sample showed a smaller grain size and significantly higher strength. Simulations carried out by the Taylor-type lattice curvature-based polycrystal model shed light on the texture characteristics of the obtained materials and were in good agreement with the experiments.

Item Type:	Journal Article
Publication:	Journal of Manufacturing Science and Engineering
Publisher:	American Society of Mechanical Engineers (ASME)
Additional Information:	The copyright for this article belongs to the American Society of Mechanical Engineers (ASME).
Keywords:	aluminum; bulk deformation processes; extrusion; grain fragmentation; mechanical properties; polycrystal. simulation; powder processing; room temperature
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	19 Jul 2023 09:30
Last Modified:	19 Jul 2023 09:30
URI:	https://eprints.iisc.ac.in/id/eprint/82507

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