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
收藏
页码：141 / 146
页数：6
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