Sliding wear of nanocrystalline Nb-Ag at elevated temperatures: Evolution of subsurface microstructure and its correlation with wear performance

Chu, Kangjie1,2; Zhou, Jian3; Ren, Fuzeng1

2018-11-15

10.1016/j.wear.2018.08.018

WEAR   影响因子和分区

0043-1648

1873-2577

An in-depth understanding of the formation of subsurface microstructure and its correlation with wear performance is a prerequisite towards controlling friction and wear at high temperatures, but such information for nanostructured binary immiscible alloys is rather limited. Here, we systematically investigated the sliding wear of nanocrystalline Nb90Ag10 two-phase alloy against Inconel alloy 600 disks at temperatures from 25 to 500 degrees C. Detailed characterizations on the subsurface layers show that their microstructures have a strong correlation with the corresponding wear performance. At 25 and 200 degrees C, no oxidation layer formed. The metallic sliding contacts result in higher coefficients of friction (CoF) and wear rates, and the formation of nanolayered structure near the sliding surface. M 350 degrees C, the tribo-oxidation reaction occurred only within the counterface material and a mechanical mixing layer was formed below the sliding surface of the pin. The third-body wear yielded pronounced reduction in CoF but the highest wear rate. At 500 degrees C, the tribo-oxidation occurred within both the pin and the counterface material. A protective glaze layer formed on the top of the pin and thus leads to the lowest wear rate.

Wear Nanocrystalline Nb-Ag alloy Subsurface microstructure

SCI ; EI

英语

第一 ; 通讯

Guangdong Innovative & Entrepreneurial Research Team Program, China[2016ZT06C279]

Engineering ; Materials Science

Engineering, Mechanical ; Materials Science, Multidisciplinary

WOS:000448334700027

ELSEVIER SCIENCE SA

20183705796306

Binary alloys ; Friction ; Microstructure ; Nanocrystals ; Niobium alloys ; Oxidation ; Silver alloys ; Wear of materials

Precious Metals:547.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Hong Kong, Peoples R China
3.Soochow Univ, Shagang Sch Iron & Steel, 178 Gan Jiang Dong Rd, Suzhou, Peoples R China

Chu, Kangjie,Zhou, Jian,Ren, Fuzeng. Sliding wear of nanocrystalline Nb-Ag at elevated temperatures: Evolution of subsurface microstructure and its correlation with wear performance[J]. WEAR,2018,414:251-261.

Chu, Kangjie,Zhou, Jian,&Ren, Fuzeng.(2018).Sliding wear of nanocrystalline Nb-Ag at elevated temperatures: Evolution of subsurface microstructure and its correlation with wear performance.WEAR,414,251-261.

Chu, Kangjie,et al."Sliding wear of nanocrystalline Nb-Ag at elevated temperatures: Evolution of subsurface microstructure and its correlation with wear performance".WEAR 414(2018):251-261.