Influence of Co Content on Cracking Behavior and Wear Resistance of WCp-Reinforced FeCrMnCox HEAs Fabricated by the Laser Cladding Method

Wu，Wenxing1; Qiu，Changjun1; Zhou，Yinghao2; Yan，Ming2; Zhang，Yun3; Li，Ruiqing3; Chen，Pinghu4

2022-03-21

10.3389/fmats.2022.811253

Frontiers in Materials   影响因子和分区

2296-8016

2296-8016

High-entropy alloys (HEAs) have excellent properties of high strength–ductility, thermal stability, corrosion resistance, etc. HEAs can be considered as one of the most interesting structural or functional candidate materials and have been extensively studied based on different multiple elements in the past decades. However, the previous works focus mainly on overcoming strength–ductility trade-off. In this study, a series of WCp-reinforced FeCrMnCo (x values in atomic ratio, x = 0, 2, 4, 6, 8, and 10 at.%) HEAs are fabricated to investigate the influence of Co on the microstructures, microhardness, cracking behavior, and wear resistance. The results indicate that γ phase (fcc structure) can be formed in the designed HEA with a small amount of α phase (bcc structure). Stress can result in cracking initiation owing to the formation of lattice distortion caused by the decomposition and diffusion of WC into the matrix, and the cracking phenomenon is more serious when Co content is decreased gradually. In addition, microhardness is also increased gradually with the decrease in Co content, and the maximum microhardness reaches 680 HV for the 0–2 sample without Co. Furthermore, excellent wear resistance of the designed materials can be attributed mainly to hardness rather than friction coefficient. A conspicuous monotonic decrease in the wear rate is discovered with a monotonic increase in microhardness, adhesive wear mechanism appears mainly in the samples with higher Co content, and the wear mechanism is transformed gradually from a typical adhesive wear mechanism to an abrasive wear mechanism with the reduction in Co content.

cracking behaviors high-entropy alloys laser cladding method microhardness wear resistance

SCI ; EI

英语

其他

Open Research Fund of State Key Laboratory of High-Performance Complex Manufacturing, Central South University[Kfkt 2020-01] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515011858] ; Science and Technology Innovation Program of Hunan Province[2020RC 2002] ; Hunan Provincial Natural Science Foundation of China["2019JJ50807","2021JJ40774"] ; Project of State Key Laboratory of High-Performance Complex Manufacturing, Central South University[ZZYJKT2021-01]

Materials Science

Materials Science, Multidisciplinary

WOS:000779646700001

FRONTIERS MEDIA SA

20221511963618

Adhesives ; Cobalt alloys ; Corrosion resistance ; Crystal structure ; Ductility ; Entropy ; Fabrication ; Friction ; High strength alloys ; High-entropy alloys ; Microhardness ; Reinforcement ; Tribology ; Wear of materials

Metallurgy and Metallography:531 ; Metallurgy:531.1 ; Metals Corrosion:539.1 ; Chromium and Alloys:543.1 ; Iron Alloys:545.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Classical Physics; Quantum Theory; Relativity:931 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Crystal Lattice:933.1.1 ; Materials Science:951

2-s2.0-85127984651

Scopus

1.School of Nuclear Science and Technology,School of Mechanical Engineering,University of South China,Hengyang,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,China
3.State Key Laboratory of High Performance Complex Manufacturing,Light Alloys Research Institute,Central South University,Changsha,China
4.College of Mechatronics and Control Engineering,Additive Manufacturing Institute,Shenzhen University,Shenzhen,China

Wu，Wenxing,Qiu，Changjun,Zhou，Yinghao,et al. Influence of Co Content on Cracking Behavior and Wear Resistance of WCp-Reinforced FeCrMnCox HEAs Fabricated by the Laser Cladding Method[J]. Frontiers in Materials,2022,9.

Wu，Wenxing.,Qiu，Changjun.,Zhou，Yinghao.,Yan，Ming.,Zhang，Yun.,...&Chen，Pinghu.(2022).Influence of Co Content on Cracking Behavior and Wear Resistance of WCp-Reinforced FeCrMnCox HEAs Fabricated by the Laser Cladding Method.Frontiers in Materials,9.

Wu，Wenxing,et al."Influence of Co Content on Cracking Behavior and Wear Resistance of WCp-Reinforced FeCrMnCox HEAs Fabricated by the Laser Cladding Method".Frontiers in Materials 9(2022).