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Effect of yttrium addition on microstructure and hardness of cast ZRE1 magnesium alloy

Ahmad, R. and M. Sheggaf, Zayad and Asmael, M. B. A. and Hamzah, M. Z. (2016) Effect of yttrium addition on microstructure and hardness of cast ZRE1 magnesium alloy. ARPN Journal of Engineering and Applied Sciences, 11 (12). 7689- 7693. ISSN 18196608

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Abstract

In this research, optical observations, X- ray diffraction and hardness measurements were used to investigate the effects of yttrium (Y) additions on as cast ZRE1 magnesium alloy. 0.75 wt.% Y was added and compared with the base alloy. The microstructure results show the refinement of the grain by the addition of Y and the grains became smaller about 32 %, which led to the increment of hardness from 50 HV (as-cast ZRE1) to 56.6 HV (as-cast ZRE1+0.75 Y).Energy dispersive spectroscopy (EDS) results showed that the base alloy mainly contained α-Mg matrix and Mg-Zn-Ce as a second phase crystallized along the grain boundaries and with the addition of Y, Mg-Zn-Y-Ce phase was found as a new second phase, where Y combined with the original second phase, which confirmed by the X-ray diffraction (XRD) results and also there is no other phases was formed by the Y addition.

Item Type: Article
Uncontrolled Keywords: Magnesium; yttrium; microstructure; hardness
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:26
Last Modified: 13 Aug 2018 03:26
URI: http://eprints.uthm.edu.my/id/eprint/8787
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