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

Article dans une revue avec comité de lecture
Auteur
PARIYAR, Abhishek
86671 Indian Institute of Science [Bangalore] [IISc Bangalore]
TOTH, Laszlo S.
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
243747 Labex DAMAS
KAILAS, Satish V.
86671 Indian Institute of Science [Bangalore] [IISc Bangalore]
PELTIER, Laurent
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
243747 Labex DAMAS

URI
http://hdl.handle.net/10985/19335
DOI
10.1016/j.scriptamat.2020.08.035
Date
2020
Journal
Scripta Materialia

Résumé

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.

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2021-03-01
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