An inverse Hall-Petch behavior and improving toughness in translucent nanocrystalline high-entropy zirconate ceramic |
| |
| Affiliation: | 1. School of Mechanical Engineering, Chengdu University, Chengdu 610106, China;2. Institute for Advanced Study, Chengdu University, Chengdu 610106, China;3. College of Physics, Sichuan University, Chengdu 610064, China;4. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610064, China;1. Depto. de Física de la Materia Condensada, ICMS, CSIC-Universidad de Sevilla, Apdo. 1065, Sevilla 41080, Spain;2. Instituto de Ciencia de Materiales de Sevilla, ICMS, CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, Sevilla 41092, Spain;1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China;2. School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China;3. Department of the Built Environmen, Eindhoven University of Technology, Eindhoven 5600 MB, the Netherlands;1. School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China;2. School of Material Science and Engineering, Chang’an University, Xi’an 710064, China;1. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an 710072, China;2. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China;3. Xi’an Xinyao Ceramic Composite Materials Co., Ltd., Xi’an 710117, China;1. State Key Laboratory of High-Performance Ceramics & Super?ne Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;1. AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu, China;2. State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China |
| |
| Abstract: | Short-range order is a new strengthening effect that can significantly affect the mechanical properties of high-entropy materials. Furthermore, simulation results show that this strengthening effect at a quasi-atomic scale can suppress the grain size softening, leading to the disappearance of inverse Hall-Petch behavior in nanocrystalline high-entropy materials. In this work, the evident inverse Hall-Petch behavior is confirmed in the translucent nanocrystalline high-entropy ceramic (HEC) with an average grain size below 10 nm, fabricated by a high-pressure low-temperature sintering technique. Besides, the as-obtained nanocrystalline HEC also shows an improving fracture toughness compared with the corresponding coarse-crystalline HEC. |
| |
| Keywords: | High-entropy ceramic Zirconate Nano-crystalline Inverse Hall-Petch Hardness |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
