Imparting high-temperature grain stability to an Al-Mg alloy

Pariyar, A and Toth, LS and Kailas, SV and Peltier, L (2021) Imparting high-temperature grain stability to an Al-Mg alloy. In: Scripta Materialia, 190 . pp. 141-146.

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Abstract

Al alloys, despite their excellent strength-to-weight ratio, cannot be used at elevated temperatures because of microstructural instability owing to grain growth and precipitate coarsening, thus, leading to a drastic loss in their strength. In this work, we have attempted to address the issue of grain growth by introducing in-situ formed polymer derived ceramics in an Al-Mg alloy. A stable grain structure with minimal loss in hardness when exposed to 450°C and 550°C for 1 hour was obtained due to the particle pinning of the grain boundaries by the Zener mechanism. © 2020

Item Type:	Journal Article
Publication:	Scripta Materialia
Publisher:	Acta Materialia Inc
Additional Information:	The copyright of this article belongs to Acta Materialia Inc
Keywords:	Binary alloys; Coarsening; Grain boundaries; Grain growth; Magnesium alloys, Elevated temperature; High temperature; Microstructural instability; Particle pinning; Polymer-derived ceramics; Precipitate coarsening; Strength to weight ratio; Zener mechanism, Aluminum alloys
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	22 Sep 2020 11:25
Last Modified:	22 Sep 2020 11:25
URI:	http://eprints.iisc.ac.in/id/eprint/66588

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