Effect of Sn on the microstructural evolution of quasicrystal-reinforced Mg–Zn

Effect of Sn on the microstructural evolution of quasicrystal-reinforced Mg–Zn–Y alloy

Published:2023-08 Issue:12 Volume:39 Page:1475-1482
ISSN:0267-0836
Container-title:Materials Science and Technology
language:en
Short-container-title:Materials Science and Technology

Author:

Wang Jiang¹,Chen Yu'an¹²,Pan Fusheng¹²

Affiliation:

1. College of Materials Science and Engineering, Chongqing University, Chongqing, People's Republic of China

2. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, People's Republic of China

Abstract

The effect of Sn content on the microstructure evolution of the as-cast, as-extruded and as-aged Mg-8Zn-2Y- xSn alloys were systematically investigated. The results show that addition of Sn not only refines the grains but also promotes the precipitation of quasicrystal I-phase and the formation of Sn3Y5. The phase transformations during solidification were also studied in detail. After extrusion, the broken second phase particles (I-phase) are more uniformly and densely distributed in the matrix with Sn addition. Moreover, ultra-fine dynamically recrystallized grains are obtained in extruded Mg-8Zn-2Y-0.5Sn alloy. In addition, high density nano-scale precipitates are uniformly dispersed by aging, and these precipitates are identified to be Mg-Zn particles, I phase and mixture of the [Formula: see text] Mg-Zn precipitates and I-phase.

Funder

the National Key Research and Development Program of China

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://journals.sagepub.com/doi/pdf/10.1080/02670836.2023.2173431

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