Solidification, microstructure and mechanical properties of Mg-2.8Nd-1.5Gd-0.5Zn-0.5Zr cast alloy with erbium addition

Ahmad, R. and Elaswad, A.M.M. and Hamzah, M. Z. and Shahizan, N. R. (2018) Solidification, microstructure and mechanical properties of Mg-2.8Nd-1.5Gd-0.5Zn-0.5Zr cast alloy with erbium addition. MATEC Web of Conferences, 202 (01001). pp. 1-5. ISSN 2261-236X

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Official URL: https://doi.org/10.1051/matecconf/201820201001

Abstract

The thermal parameters of Mg-2.8Nd-1.5Gd-0.5Zn-0.5Zr cast alloy with 0.25 wt.% of erbium (Er) were evaluated by the computer-aided cooling curve thermal analysis(CA CCTA), whereas the microstructure analysis was investigated by the optical microscope and scanning electron microscopy. Results from the cooling curve and microstructure analysis showed that Er altered the grain size of the alloys. In addition, the grain size was reduced by approximately 19.6% with the addition of Er. Scanning electron microscopy results showed that Er formed an Mg-Zn-Nd-Er phase which distributed along the grain boundaries. Furthermore, the mechanical properties were investigated by hardness and tensile tests with Er addition. The addition of 0.25 wt.% of Er significantly improved the ultimate tensile strength and yield strength. In addition, the hardness value of Mg-2.8Nd-1.5Gd-0.5Zn-0.5Zr increased by 13.9% with Er addition.

Item Type:	Article
Uncontrolled Keywords:	NIL
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 Engineering
Depositing User:	Miss Afiqah Faiqah Mohd Hafiz
Date Deposited:	21 Nov 2021 02:55
Last Modified:	21 Nov 2021 02:55
URI:	http://eprints.uthm.edu.my/id/eprint/3593

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