Temperature-induced wear transition in ceramic-metal composites
文献类型：期刊论文
| 作者 | Lou, Ming; Chen, Xiang; Xu, Kai; Deng, Zixuan; Chen, Leilei; Lv, Jian; Chang, Keke; Wang, Liping |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2021 |
| 卷号 | 205 |
| 关键词 | NANOCRYSTALLINE NI-W SLIDING WEAR MICROSTRUCTURE EVOLUTION DEFORMATION MECHANISMS TRIBOLOGICAL BEHAVIOR FRACTURE-BEHAVIOR GRAIN-SIZE FRICTION STEEL DECARBURIZATION |
| 英文摘要 | Wear degradation is a key parameter to evaluate the performance of ceramic-metal composites applied in manufacturing and mining industries. We selected a typical composite (high Mn steel + 50 wt.% TiC) as the model system and studied its wear behavior. The integrity and damage of TiC ceramic particles were analyzed under different temperatures and atmospheres. A critical temperature of similar to 125 degrees C at which transitions of wear mechanism occurred was observed for the first time. Below this temperature, hardness dominated the wear behavior as the presence of oxygen induced surface decarburization of ceramic particles with an increased wear rate. The thermodynamics of oxygen-assisted decarburization were investigated using the CALPHAD (CALculation of PHAse Diagram) approach, and the resultant hardness reduction of TiC particles was clarified using density functional theory (DFT) calculations. At temperatures above 125 degrees C, toughness became the governing factor as the ceramic-metal deformation incompatibility induced fracture of ceramic particles. The formation of nano-crystalline oxide tribolayers improved the fracture toughness of ceramic particles and restrained the wear loss, which was elucidated using DFT calculations. Thus, the current work has delineated the competitive micro-mechanisms consisting of surface decarburization and toughening of ceramic particles, which could be used to interpret the wear behavior of ceramic-metal composites. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22197]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Chang, KK 2.Wang, LP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Key Lab Marine Mat & Protect Technol, Key Lab Marine Mat & Related Technol, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Lou, Ming,Chen, Xiang,Xu, Kai,et al. Temperature-induced wear transition in ceramic-metal composites[J]. ACTA MATERIALIA,2021,205. |
| APA | Lou, Ming.,Chen, Xiang.,Xu, Kai.,Deng, Zixuan.,Chen, Leilei.,...&Wang, Liping.(2021).Temperature-induced wear transition in ceramic-metal composites.ACTA MATERIALIA,205. |
| MLA | Lou, Ming,et al."Temperature-induced wear transition in ceramic-metal composites".ACTA MATERIALIA 205(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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