Morphologies of Microstructure in Mg97Zn1Y2 Ribbon upon Ageing at Different Temperatures

Baishu Wang; Yongbing Liu; Jian An; Rongguang Li; Zhenguo Su; Guihua Su; You Lu; Zhanyi Cao

doi:10.2320/matertrans.MRA2008033

This article has now been updated. Please use the final version.

Morphologies of Microstructure in Mg₉₇Zn₁Y₂ Ribbon upon Ageing at Different Temperatures

Baishu Wang, Yongbing Liu, Jian An, Rongguang Li, Zhenguo Su, Guihua Su, You Lu, Zhanyi Cao

Author information

Baishu Wang
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University
Department of Materials Science and Engineering, Changchun University of Technology
Yongbing Liu
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University
Jian An
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University
Rongguang Li
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University
Zhenguo Su
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University
Guihua Su
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University
You Lu
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University
Zhanyi Cao
The Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University

Keywords: magnesium-zinc-yttrium alloy, melt-spinning, long period stacking (LPS) structure, morphology, age

JOURNAL RESTRICTED ACCESS Advance online publication

Article ID: MRA2008033

DOI https://doi.org/10.2320/matertrans.MRA2008033

The final version of this article is now available: Vol. 49 (2008) , No. 8 p.1768

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Abstract

In order to clarify the morphology of the rapidly-solidified (RS)/melt-spun Mg₉₇Zn₁Y₂ (at%) alloy, which has the secondary phases of long-period stacking (LPS) structure, the ribbon was processed with the thickness of 60 μm and the width of 7 mm, and aged (T5 heat-treated) at different temperatures. The as-spun and aged ribbons were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD) and laser optical microscopy, and micro-hardness measurement were conducted. It is found that there was a cellular/dendritic transition during melt-spinning process of Mg₉₇Zn₁Y₂ alloy, and a mild age strengthening with the hardness of 113HV/0.05 at 573 K; more importantly, there was a different evolution of morphologies of the matrix and inter-metallic compounds from general secondary phase strengthened alloys when age temperatures up to the 773 K had been introduced to the as-spun alloy.

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