Improving Mechanical Properties of Mg–Sc Alloy by Surface AZ31 Layer

Cheng Zhang; Cheng Peng; Jin Huang; Yanchun Zhao; Tingzhuang Han; Guangang Wang; Liang Wu; Guangsheng Huang

doi:10.3390/met11122021

Metals (Dec 2021)

Improving Mechanical Properties of Mg–Sc Alloy by Surface AZ31 Layer

Cheng Zhang,
Cheng Peng,
Jin Huang,
Yanchun Zhao,
Tingzhuang Han,
Guangang Wang,
Liang Wu,
Guangsheng Huang

Affiliations

Cheng Zhang: The Key Laboratory of Chongqing Inorganic Special Functional Materials, Yangtze Normal University, Chongqing 408100, China
Cheng Peng: The Key Laboratory of Chongqing Inorganic Special Functional Materials, Yangtze Normal University, Chongqing 408100, China
Jin Huang: School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, “The Belt and Road (B&R)” International Joint Research Laboratory of Sustainable Materials, Southwest University, Chongqing 400715, China
Yanchun Zhao: The Key Laboratory of Chongqing Inorganic Special Functional Materials, Yangtze Normal University, Chongqing 408100, China
Tingzhuang Han: State Key Laboratory of Solidification Processing, School of Materials Science & Engineering, Northwestern Polytechnical University, Xi’an 710072, China
Guangang Wang: State Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Liang Wu: State Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Guangsheng Huang: State Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

DOI: https://doi.org/10.3390/met11122021
Journal volume & issue: Vol. 11, no. 12
p. 2021

Abstract

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Building a gradient structure inside the Mg alloy structure can be expected to greatly improve its comprehensive mechanical properties. In this study, AZ31/Mg–Sc laminated composites with gradient grain structure were prepared by hot extrusion. The microstructure and mechanical properties of the Mg–1Sc alloy with different extrusion temperatures and surface AZ31 fine-grain layers were investigated. The alloy has a more obvious gradient microstructure when extruded at 350 °C. The nanoscale hardness value of Mg–1Sc alloy was improved through fine-grain strengthening and solution strengthening of the surface AZ31 fine-grain layer. The strength of Mg–1Sc alloy was improved due to the fine-grain strengthening and dislocation strengthening of the surface AZ31 fine-grain layer, and the elongation of Mg–1Sc alloy was increased by improving the distribution of the microstructure.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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