TEM microstructure of rapidly solidified Mg-6Zn-1Y-1Ce alloy

被引：11

作者：

Yang Wen-peng ^{[1
,2
]}

Guo Xue-feng ^{[1
]}

Lu Zheng-xin ^{[2
]}

机构：

[1] Henan Polytech Univ, Sch Mat Sci & Engn, Jiaozuo 454000, Peoples R China

[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Mg-6Zn-1Y-1Ce alloy; rapid solidification; T phase; icosahedral quasicrystalline; Mg4Zn7; phase; W phase; MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; ZN; EXTRUSION; PHASES;

D O I：

10.1016/S1003-6326(11)61246-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Rapidly solidified (RS) Mg-6Zn-1Y-1Ce ribbons were prepared by single roller melt-spinning technique. Transmission electron microscopy and energy dispersive X-ray spectroscopy were employed to characterize the microstructure of RS ribbons. The results show that there is high density of particles distributed within grains and at grain boundaries in the region near wheel side. The particle density is decreased in the middle region and free surface region. The alloy is predominantly composed of supersaturated alpha-Mg solid solution, T phase and W phase; meanwhile, a few icosahedral quasicrystalline and Mg4Zn7 particles are also observed. The T phase is confirmed having a body-centered orthorhombic structure that is transformed from the body-centered tetragonal structure Mg12Ce phase due to the partial substitution of Mg atoms by Zn.

引用

页码：786 / 792

页数：7

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