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Article

Microstructure and Properties of Mg-Al-Ca-Mn Alloy with High Ca/Al Ratio Fabricated by Hot Extrusion

by
Aimin Chu
1,*,
Yuping Zhao
2,
Rafi ud-din
3,
Hairong Hu
1,
Qian Zhi
1 and
Zerui Wang
1
1
School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
2
School of Civil and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
3
Materials Division, PINSTECH, Post Office Nilore, Islamabad 44000, Pakistan
*
Author to whom correspondence should be addressed.
Materials 2021, 14(18), 5230; https://doi.org/10.3390/ma14185230
Submission received: 22 August 2021 / Revised: 7 September 2021 / Accepted: 9 September 2021 / Published: 11 September 2021
(This article belongs to the Topic Metallurgical and Materials Engineering)
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Abstract

Mg-Al-Ca-Mn alloys with Ca/Al ≥ 1 of AX33, AX44, and AX55 were prepared by combining three processes of water-cooling semi-continuous cast, homogenization heat treatment, and hot extrusion. The as-fabricated alloys translated into composites consisting of α-Mg solid solution + granular Al2Ca. These alloys exhibited some favourable properties such as a tensile strength of 324~350 MPa at room temperature and 187~210 MPa at elevated temperature of 423 K, an ignition temperature of 1292~1344 K, and so on. Variation trend between performance and content of Al and Ca is given in this paper. The result indicated that the emerged second-phase Al2Ca in the alloys was beneficial to the improvement in mechanical properties, heat resistance, flame retardation, and corrosion resistance.
Keywords: Mg alloys; high Ca/Al ratio; mechanical properties; hot extrusion Mg alloys; high Ca/Al ratio; mechanical properties; hot extrusion

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MDPI and ACS Style

Chu, A.; Zhao, Y.; ud-din, R.; Hu, H.; Zhi, Q.; Wang, Z. Microstructure and Properties of Mg-Al-Ca-Mn Alloy with High Ca/Al Ratio Fabricated by Hot Extrusion. Materials 2021, 14, 5230. https://doi.org/10.3390/ma14185230

AMA Style

Chu A, Zhao Y, ud-din R, Hu H, Zhi Q, Wang Z. Microstructure and Properties of Mg-Al-Ca-Mn Alloy with High Ca/Al Ratio Fabricated by Hot Extrusion. Materials. 2021; 14(18):5230. https://doi.org/10.3390/ma14185230

Chicago/Turabian Style

Chu, Aimin, Yuping Zhao, Rafi ud-din, Hairong Hu, Qian Zhi, and Zerui Wang. 2021. "Microstructure and Properties of Mg-Al-Ca-Mn Alloy with High Ca/Al Ratio Fabricated by Hot Extrusion" Materials 14, no. 18: 5230. https://doi.org/10.3390/ma14185230

APA Style

Chu, A., Zhao, Y., ud-din, R., Hu, H., Zhi, Q., & Wang, Z. (2021). Microstructure and Properties of Mg-Al-Ca-Mn Alloy with High Ca/Al Ratio Fabricated by Hot Extrusion. Materials, 14(18), 5230. https://doi.org/10.3390/ma14185230

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