Enhanced grain refinement of an Al-Mg-Si alloy by high-pressure torsion processing at 100 °C

被引：41
|
作者：
Tugcu, K. [1 ]
Sha, G. [1 ,3 ]
Liao, X. Z. [1 ]
Trimby, P. [2 ]
Xia, J. H. [1 ]
Murashkin, M. Y. [4 ]
Xie, Y. [1 ]
Valiev, R. Z. [4 ]
Ringer, S. P. [1 ,2 ,3 ]
机构：
[1] Univ Sydney, Sch Aerosp Mech & Mech Engn, Sydney, NSW 2006, Australia
[2] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia
[3] Univ Sydney, ARC Ctr Excellence Design Light Met, Sydney, NSW 2006, Australia
[4] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 552卷
基金：
澳大利亚研究理事会; 俄罗斯基础研究基金会;
关键词：
Aluminium alloy; Grain refinement; HPT; Segregation; TEM; SEVERE PLASTIC-DEFORMATION; MICROSTRUCTURAL EVOLUTION; METALS;
D O I：
10.1016/j.msea.2012.05.063
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultrafine-grained structures were obtained in a solution-treated Al-Mg-Si (6060) alloy processed by high-pressure torsion at ambient temperature, 100 degrees C and 180 degrees C. Processing at 100 degrees C provided the highest hardness and the smallest average grain size because of the enhanced segregation of solutes at grain boundaries which hindered grain growth during the processing. This research demonstrated the importance of optimising processing temperature to enhance grain refinement in high-pressure torsion processing. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：415 / 418
页数：4
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