Thermodynamic modeling and experimental investigation of the magnesium-zinc-samarium alloys
Thermodynamic modeling and experimental investigation of the magnesium-zinc-samarium alloys
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DOI：
10.1016/j.jallcom.2014.01.062
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发表时间：
2014-04-25
影响因子：
6.2
通讯作者：
Stone, Donald S.
中科院分区：
文献类型：
--
作者：
Xia, Xiangyu;Sanaty-Zadeh, Amirreza;Stone, Donald S.
镁(Mg)-锌(Zn)-钐（Sm）合金体系是开发高强度新型结构用镁合金的重要途径。本文在对5种关键合金进行研究的基础上，通过实验确定了富镁角Mg-Zn-Sm体系中的三元相。建立了该体系在350、400和450℃时的相关系。利用相图计算（CALPHAD）方法，首次建立了富镁角Mg-Zn-Sm体系的自洽热力学描述。计算的相图与本研究和文献的实验测量数据之间的良好一致性验证了本工作中使用的热力学建模方法。(C) 2014 Elsevier B.V.版权所有
Magnesium (Mg)-Zinc (Zn)-Samarium (Sm) alloy system is being considered for the development of high-strength novel Mg alloys for structural applications. In this work, ternary phases in Mg-Zn-Sm system at Mg-rich corner were identified experimentally, based upon the investigation of five key alloys. Phase relationships at 350, 400 and 450 degrees C of this system were also established. Furthermore, a self-consistent thermodynamic description of Mg-Zn-Sm system at Mg-rich corner was developed for the first time using the CALPHAD (CALculation of PHAse Diagram) method. Good agreement between the calculated phase diagrams and the experimentally measured data from both this study and literature validated the thermodynamic modeling approach used in this work. (C) 2014 Elsevier B.V. All rights reserved.