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Microstructure, Texture and Mechanical Properties of Mg-Sn-Zn Alloy Sheets Processed by Extrusion and Hot Rolling

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Abstract:

Mg-5Sn alloys containing different Zn contents (Zn=1, 2, 3; wt.%) were extruded at 380°C with a extrusion ratio of 29, rolled at 400°C with a total rolling reduction of 50% subsequently. The microstructure, texture and mechanical properties of as-extruded and as-rolled sheets were investigated. The results indicated that Zn played a vital role on microstructure and mechanical properties under extrusion and rolling conditions, the strength and elongation were improved with Zn addition due to recrystallization texture during hot processing. The Mg-5Sn sheet with high Zn content exhibited a high degree of dynamic recrystallization and stable strain hardening rate. The anisotropy of hot deformation alloys was weakened with increasing Zn content, especially for as-extruded alloy. The Mg-5Sn-3Zn alloy exhibited best comprehensive mechanical properties under both extrusion and rolling condition.

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Periodical:

Key Engineering Materials (Volume 727)

Pages:

196-203

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.727.196

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Online since:

January 2017

Authors:

Yuan Chen, Hao Liu, Gen Tao Gao, Dan Fang, Yi Wang, Li Jin, Yan Jiang

Keywords:

Mechanical Properties, Mg-Sn-Zn Alloy, Microstructure, Texture

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