A systematic investigation of secondary phase dissolution in Mg-Sn alloys

被引：20

作者：

Dev, Arushi ^{[1
]}

Naskar, Niladri ^{[2
]}

Kumar, Nishant ^{[2
]}

Jena, Ashutosh ^{[1
]}

Paliwal, Manas ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Mat Sci & Engn, Palaj Campus, Gandhinagar 382355, Gujarat, India

[2] Seoul Nat Univ, Seoul 08826, South Korea

来源：

JOURNAL OF MAGNESIUM AND ALLOYS | 2019年 / 7卷 / 04期

关键词：

Solution treatment; Homogenization; Dissolution; Mg-Sn alloys; CREEP-PROPERTIES; DIFFUSION; TENSILE; AL; MICROSTRUCTURE;

D O I：

10.1016/j.jma.2019.11.002

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

As-cast Mg-Sn alloys (3, 6, and 9 wt% Sn) were solution treated at 653, 703 and 753 K (380, 430 and 480 degrees C) for 1, 4, 8, 12 and 24 h to determine the variation of secondary phase with respect to Sn content, temperature and time. Mg-3 wt% Sn exhibits Mg2Sn dissolution at all solution treatment temperatures whereas Mg-6 and 9 wt% Sn alloy displays Mg2Sn reprecipitation and dissolution depending on the heat treatment temperature. In addition, a combined mathematical model that predicts the secondary phase dissolution and solute redistribution as a function of temperature and time is presented in this work. This model is a significant improvement compared to the previous studies where the dissolution and homogenization processes are considered independently. The effect of grain size and solute mobility upon the dissolution and homogenization kinetics is discussed as well. (C) 2019 Published by Elsevier B.V. on behalf of Chongqing University.

引用

页码：725 / 737

页数：13

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