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

被引：20

作者：

Pariyar, Abhishek ^{[1
,2
]}

Toth, Laszlo S. ^{[2
,3
]}

Kailas, Satish, V ^{[1
]}

Peltier, Laurent ^{[3
]}

机构：

[1] Indian Inst Sci, Dept Mech Engn, Bangalore 560012, Karnataka, India

[2] Univ Lorraine, Lab Excellence Design Alloy Met Low Mass Struct L, F-57070 Metz, France

[3] Univ Lorraine, LEM3 Lab, CNRS, Arts & Metiers ParisTech, F-57000 Metz, France

来源：

SCRIPTA MATERIALIA | 2021年 / 190卷

关键词：

Grain stability; Zener pinning; Aluminum alloy; Hardness; Equiaxed microstructure; GROWTH;

D O I：

10.1016/j.scriptamat.2020.08.035

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 degrees C and 550 degrees C for 1 hour was obtained due to the particle pinning of the grain boundaries by the Zener mechanism. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：141 / 146

页数：6

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