High-temperature solid particle erosion characteristics and damage mechanism of AlxCoCrFeNiSi high-entropy alloy coatings prepared by laser cladding

被引：29
作者：
Zhang, Shiyi [1 ,2 ]
Han, Bin [3 ]
Zhang, Timing [1 ,2 ]
Chen, Yuhua [1 ,2 ]
Xie, Jilin [1 ,2 ]
Shen, Yang [1 ,2 ]
Huang, Long [1 ]
Qin, Xuwei [1 ]
Wu, Yebin [1 ]
Pu, Kejin [4 ]
机构：
[1] Nanchang Hangkong Univ, Sch Aerosp Mfg Engn, Nanchang 330063, Peoples R China
[2] Nanchang Hangkong Univ, Jiangxi Key Lab Forming & Jointing Technol Aviat C, Nanchang 330063, Peoples R China
[3] China Univ Petr East China, Sch Mat Sci & Engn, Qingdao 266580, Peoples R China
[4] CSIC 713 Res Inst, Zhengzhou 410100, Peoples R China
来源：
INTERMETALLICS | 2023年 / 159卷
关键词：
High-entropy alloy; Laser cladding; Erosion resistance; Oxidation; Hardness; CAVITATION EROSION; WEAR; MICROSTRUCTURE; HARDNESS;
D O I：
10.1016/j.intermet.2023.107939
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The solid particle erosion effects on AlxCoCrFeNiSi high-entropy alloy coatings (HEAcs) prepared by laser cladding under different erosion conditions were investigated. Furthermore, the transformation of the micro-structure and properties of the prepared HEAcs under high-temperature conditions and the effect of oxidation on erosion behavior were analyzed. The results show that the hardest Al1.0 HEAc (711 HV0.2) presents typical brittle erosion characteristics, as fracture toughness deteriorates with increasing Al content. When the erosion tem-perature reaches 700 degrees C, the erosion rate decreases due to precipitation enhancement and oxidation affecting the erosion behavior.
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页数：11
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