Comparative hot deformation characters of Al-Mn-Mg-RE alloy and Al-Mn-Mg-RE-Ti alloy

被引：11
作者：
Jiang, Fulin [1 ]
Zhang, Hui [1 ,2 ]
Ji, Xiankun [1 ]
Meng, Xianna [1 ]
Li, Luoxing [3 ]
机构：
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Hunan Prov Key Lab Spray Deposit Technol & Applic, Changsha 410082, Hunan, Peoples R China
[3] Hunan Univ, State Key Lab Adv Design & Manufacture Vehicle Bo, Changsha 410082, Hunan, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 595卷
关键词：
Al-Mn-Mg-RE alloy; Ti addition; Constitutive behavior; Microstructural characterization; Hot workability; GRAIN REFINING EFFICIENCY; ALUMINUM-ALLOYS; MECHANICAL-PROPERTIES; FLOW-STRESS; ELEVATED-TEMPERATURES; MASTER ALLOY; CE ADDITION; MICROSTRUCTURES; BEHAVIOR; COMPRESSION;
D O I：
10.1016/j.msea.2013.12.004
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The hot deformation characters of two Al-Mn-Mg-RE alloys (without and with Ti addition, respectively) were studied by hot compression tests, and the deformed microstructures were observed by optical microscopy and transmission electron microscopy, respectively. The results show that the flow stress, hot deformation activation energy and stress exponent were higher with the addition of Ti during hot deformation. Less indistinct subgrain boundaries were also obtained with addition of Ti. The main enriched rare earth constituent particles could make positive purifying effects on impurity elements of Fe and Si in the Al-Mn-Mg-RE alloy. While the addition of Ti not only promoted the formation of a more stable Ti-2 Al-20 (Ce-x, La1-x) phase, but also resulted in more refined and dispersive constituent particles, which could improve the hot workability of the alloy. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：10 / 17
页数：8
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