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Effects of nanocrystalline microstructure on the dry sliding wear behavior of a Cu-10 at% Ag-10 at% W ternary alloy against stainless steel
Weiwei Zhu1,2; Cancan Zhao1; Chi Tat Kwok2,3; Jian Zhou4; Fuzeng Ren1
2018-05-15
Source PublicationWEAR
ISSN0043-1648
Volume402Pages:1-10
Abstract

To explore the W nanoparticles effects on the subsurface microstructural self-organization of Cu-Ag two-phase alloys and the resulting wear performance, we have fabricated bulk nanostructured Cu-10 at% Ag-10 at% W ternary alloys by high energy ball milling and warm pressing. During ball milling, Ag is dissolved into the Cu matrix but W remains immiscible. Compaction of the powders into bulk at 300 degrees C leads to the Ag precipitation. The as-pressed Cu-10 at% Ag-10 at% W ternary alloy has Ag-rich precipitates size (d(Ag)) of 22 nm and W particles size (d(w)) of 26 nm. Further annealing at 600 degrees C for 1 h only increases d(Ag) and d(w) to 52 nm and 41 nm, respectively. The fabricated Cu-10 at% Ag-10 at% W ternary alloys thus demonstrate enhanced coarsening resistance. The two alloys were then subjected to dry sliding wear against stainless steel disks. It is found that the initial length scale of Ag-rich precipitates and W particles has a profound influence on the microstructure evolution during wear and accordingly on the wear performance. For the as-pressed sample with small d(Ag) and d(W), severe plastic deformation (SPD) by wear forced the formation of Cu-Ag homogeneous solid solution, leading to low wear resistance. In contrast, for the annealed one with relatively large d(Ag) and d(W), the Cu, Ag and W three phases co-existed but the Ag-rich precipitates were transformed into wavy nanolayers, providing enhanced wear resistance. Compared with Cu-Ag alloys subjected to sliding wear, the presence of W nanoparticles was found to hinder the formation of self-organized nanolayered structure and leads to a small deformation depth. The obtained results provide deep insights into the plastic deformation mechanisms in ternary alloys and the design of wear resistant engineering materials.

KeywordCu-ag-w Ternary Alloy Sliding Wear Microstructure
DOIhttps://doi.org/10.1016/j.wear.2018.01.013
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
WOS IDWOS:000429077100001
PublisherELSEVIER SCIENCE SA
The Source to ArticleWOS
Fulltext Access
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Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Corresponding AuthorFuzeng Ren
Affiliation1.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
2.Institute of Applied Physics and Materials Engineering, Faculty of Science & Technology, University of Macau, Macau, China
3.Department of Electromechanical Engineering, Faculty of Science and Technology, The University of Macau, Macau, China
4.Shagang School of Iron and Steel, Soochow University, 178 Gan Jiang Dong Road, Suzhou, China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Weiwei Zhu,Cancan Zhao,Chi Tat Kwok,et al. Effects of nanocrystalline microstructure on the dry sliding wear behavior of a Cu-10 at% Ag-10 at% W ternary alloy against stainless steel[J]. WEAR,2018,402:1-10.
APA Weiwei Zhu,Cancan Zhao,Chi Tat Kwok,Jian Zhou,&Fuzeng Ren.(2018).Effects of nanocrystalline microstructure on the dry sliding wear behavior of a Cu-10 at% Ag-10 at% W ternary alloy against stainless steel.WEAR,402,1-10.
MLA Weiwei Zhu,et al."Effects of nanocrystalline microstructure on the dry sliding wear behavior of a Cu-10 at% Ag-10 at% W ternary alloy against stainless steel".WEAR 402(2018):1-10.
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