Microstructure, mechanical properties and wear resistance of Ti particles reinforced AZ31 magnesium matrix composites

Junliu Ye; Xianhua Chen; Huan Luo; Jie Zhao; Jianbo Li; Jun Tan; Hong Yang; Bo Feng; Kaihong Zheng; Fusheng Pan

Journal of Magnesium and Alloys (Aug 2022)

Microstructure, mechanical properties and wear resistance of Ti particles reinforced AZ31 magnesium matrix composites

Junliu Ye,
Xianhua Chen,
Huan Luo,
Jie Zhao,
Jianbo Li,
Jun Tan,
Hong Yang,
Bo Feng,
Kaihong Zheng,
Fusheng Pan

Affiliations

Junliu Ye: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
Xianhua Chen: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, China; Corresponding authors at: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China.
Huan Luo: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
Jie Zhao: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
Jianbo Li: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, China; Corresponding authors at: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China.
Jun Tan: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
Hong Yang: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
Bo Feng: Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
Kaihong Zheng: Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China
Fusheng Pan: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, China; Corresponding authors at: College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China.

Journal volume & issue: Vol. 10, no. 8
pp. 2266 – 2279

Abstract

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The compromise between strength and plasticity has greatly limited the potential application of particles reinforced magnesium matrix composites (MMCs). In this work, the Ti particles reinforced AZ31 magnesium (Mg) matrix composites achieved simultaneous improvement in strength, elongation and wear resistance. The Ti particles reinforced AZ31 composites were fabricated by ultrasonic-assisted stir casting with hot extrusion. The results showed that a strong interfacial bonding was obtained at Ti/Mg interface because of the formation of semi-coherent orientation relationship of TiAl/Mg, TiAl/Al2Ti and Al2Ti/Mg interfaces. The as-extruded 6 wt.%Ti/AZ31 composite presented the best compressive mechanical properties and wear resistance with ultimate tensile strength, elongation and wear rate of 327 MPa, 20.4% and 9.026 × 10−3 mm3/m, obviously higher than those of AZ31 alloys. The enhanced mechanical properties were attributed to the grain refinement and strong interfacial bonding. The improved wear resistance was closely related to the increased hardness of composites and the formation of protective oxidation films.

Published in Journal of Magnesium and Alloys

ISSN: 2213-9567 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.keaipublishing.com/en/journals/journal-of-magnesium-and-alloys/

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