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Tribology Transactions Volume 62, 2019 - Issue 1
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Original Articles

Effect of Compressive Deformation on Wear Property of Extruded ZK60 Magnesium Alloy

Guilin GongState Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing, P. R. China; ;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, P. R. China; View further author information
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Guangsheng HuangState Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing, P. R. China; ;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, P. R. China; ;Chongqing Research Center for Advanced Materials, Chongqing Academy of Science & Technology, Chongqing, P. R. ChinaCorrespondence[email protected]
View further author information
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Lun HuangState Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing, P. R. China; ;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, P. R. China; View further author information
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Fusheng PanState Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing, P. R. China; ;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, P. R. China; ;Chongqing Research Center for Advanced Materials, Chongqing Academy of Science & Technology, Chongqing, P. R. ChinaView further author information
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Bin JiangState Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing, P. R. China; ;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, P. R. China; ;Chongqing Research Center for Advanced Materials, Chongqing Academy of Science & Technology, Chongqing, P. R. ChinaView further author information
Pages 1-7 | Received 16 Apr 2017, Accepted 31 Dec 2017, Published online: 25 Oct 2018
 
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Abstract

The present study investigates the dry sliding wear behavior of precompressed ZK60 alloy using a ball-on-disc wear test machine under normal loads of 20 and 40N at a sliding speed of 0.5m s−1 for a constant sliding distance of 1,500m. Microstructures and worn surfaces were characterized by optical microscopy and scanning electron microscopy. Microhardness measurements were taken to evaluate mechanical properties. Results showed that both the microhardness and wear resistance of uncompressived alloy can be improved with precompression. This is attributed to the grain refinement via subdivision of twin lamellae generated by compressive deformation. Furthermore, the worn surface studies showed a mixed type of wear mechanisms: oxidative and delamination wear took place under higher applied loads.

Additional information

Funding

This work is supported by the National Natural Science Foundation of China (Nos. 51671041, 51531002), National Key Research and Development Plan (2016YFB0301104), and Demonstrative Project of Chongqing Science and Technology Commission (No. CSCT2014FAZKTJCSF50004).

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