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Materials Science and Technology Volume 38, 2022 - Issue 1
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Research Article

Comprehensive characterisation of tribo-layer in a Cu-15Ni-8Sn alloy during dry sliding wear

Daoxi Lia Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of China;b National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaView further author information
,
Zhi Wanga Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of China;b National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaCorrespondence[email protected]
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,
Chao Zhaoa Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of China;b National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaView further author information
,
Zongqiang Luoa Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of China;b National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaView further author information
,
Chao Yanga Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of China;b National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaView further author information
&
Weiwen Zhanga Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of China;b National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaCorrespondence[email protected]
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Pages 57-68 | Received 10 Sep 2021, Accepted 26 Dec 2021, Published online: 12 Jan 2022
 
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Abstract

The detailed characteristic of the tribo-layer in an age-hardening Cu-15Ni-8Sn alloy was studied with advanced analysis techniques. A comprehensive picture of the tribo-layer was drawn from nanoscale to macroscale. The characterisation was done for the oxide layer (OL) that is easy to scaling off during the preparation of metallographic samples, showing a homogeneous mixture of oxide and nanocrystalline particles with a thickness of several micrometers. The mechanically mixed layer (MML) is a multi-layer structure. In addition, the spinodal structure and ordered intermetallic precipitates existing in the matrix were gradually transformed or disappeared in OL and MML. Furthermore, there is a nanocrystalline transformation on the top of plastically deformed layer (PDL), where thin twin-matrix lamellar structure and equiaxed nanocrystallines were formed.

Acknowledgements

Financial support from the Guangdong Natural Science Foundation for Research Team (2015A030312003) is appreciated.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Guangdong Natural Science Foundation for Research Team [grant number 2015A030312003].

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