Achieving exceptional wear resistance in a compositionally complex alloy via tuning the interfacial structure and chemistry

Zhu, Weiwei1,2; Zhao, Cancan1; Zhang, Yiwen1; Kwok, Chi Tat2,3; Luan, Junhua4; Jiao, Zengbao5; Ren, Fuzeng1

2020

10.1016/j.actamat.2020.02.039

ACTA MATERIALIA   影响因子和分区

1359-6454

1873-2453

Titanium alloys have been widely used for medical devices and structural applications. However, conventional titanium alloys often suffer from low resistance to wear, particularly at elevated temperatures. Herein, an equiatomic TiMoNb compositionally complex alloy (CCA) is shown to exhibit wear resistance comparable to alumina at room temperature (RT). Even at 600 °C, the alloy still shows an extremely low wear rate of the order of 10⁻⁶ mm³/(N·m). The remarkable wear resistance is achieved via tuning the interfacial structure and chemistry in TiMoNb CCA, including nanostructuring, titanium segregation at the grain boundaries, and the formation of a high density of nanoscale coherent Ti-rich precipitates with cube-on-cube orientation relationship with the ultrafine-grained matrix. The present results provide significant insights into the design of novel alloys for service in harsh environments.
© 2020 Acta Materialia Inc.

Titanium alloys Compositionally complex alloy Wear Interface

EI ; SCI

英语

第一 ; 通讯

City University of Hong Kong[9360161] ; Development and Reform Commission of Shenzhen Municipality[]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000527826500061

Acta Materialia Inc

20201108280069

Alumina ; Aluminum oxide ; Grain boundaries ; Interfaces (materials) ; Niobium alloys ; Ternary alloys ; Wear of materials ; Wear resistance

Titanium and Alloys:542.3 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

MATERIALS SCIENCE

EV Compendex

1.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, University of Macau, Macau, China
4.Center for Advanced Structural Materials, Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, Hong Kong
5.Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, Hong Kong

Zhu, Weiwei,Zhao, Cancan,Zhang, Yiwen,et al. Achieving exceptional wear resistance in a compositionally complex alloy via tuning the interfacial structure and chemistry[J]. ACTA MATERIALIA,2020,188:697-710.

Zhu, Weiwei.,Zhao, Cancan.,Zhang, Yiwen.,Kwok, Chi Tat.,Luan, Junhua.,...&Ren, Fuzeng.(2020).Achieving exceptional wear resistance in a compositionally complex alloy via tuning the interfacial structure and chemistry.ACTA MATERIALIA,188,697-710.

Zhu, Weiwei,et al."Achieving exceptional wear resistance in a compositionally complex alloy via tuning the interfacial structure and chemistry".ACTA MATERIALIA 188(2020):697-710.