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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
Zhu,Weiwei1,2; Zhao,Cancan1; Kwok,Chi Tat2,3; Zhou,Jian4; Ren,Fuzeng1
2018-05-15
Source PublicationWear
ISSN0043-1648
Volume402-403Pages:1-10
AbstractTo 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 °C leads to the Ag precipitation. The as-pressed Cu-10 at% Ag-10 at% W ternary alloy has Ag-rich precipitates size (d) of 22 nm and W particles size (d) of 26 nm. Further annealing at 600 °C for 1 h only increases d and d 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 and d, 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 and d 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 Microstructure Sliding wear
DOI10.1016/j.wear.2018.01.013
URLView the original
Language英語English
Scopus ID2-s2.0-85041477190
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Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorRen,Fuzeng
Affiliation1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Institute of Applied Physics and Materials Engineering,Faculty of Science & Technology,University of Macau,Macau,Macao
3.Department of Electromechanical Engineering,Faculty of Science and Technology,The University of Macau,Macau,Macao
4.Shagang School of Iron and Steel,Soochow University,Suzhou,178 Gan Jiang Dong Road,China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Zhu,Weiwei,Zhao,Cancan,Kwok,Chi Tat,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,2018,402-403:1-10.
APA Zhu,Weiwei,Zhao,Cancan,Kwok,Chi Tat,Zhou,Jian,&Ren,Fuzeng.(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,402-403,1-10.
MLA Zhu,Weiwei,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 402-403(2018):1-10.
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