Improving mechanical properties and tribological performance of Al0.2Co1.5CrFeNi1.5Ti0.5 high entropy alloys via doping Si

doi:https://doi.org/10.1016/j.jallcom.2021.159122

LICP OpenIR > 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心

	Improving mechanical properties and tribological performance of Al0.2Co1.5CrFeNi1.5Ti0.5 high entropy alloys via doping Si
Department	中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心
	Xin BB(辛本斌)1,2 ; Zhang AJ(张爱军)1 ; Han JS(韩杰胜)1 ; Meng JH(孟军虎)1,2
The second department	金属陶瓷耐磨材料与先进制造课题组
	2021
Source Publication	Journal of Alloys and Compounds
Volume	869 Issue:2021 Pages:159122
Abstract	Phase evolution, microstructures, mechanical properties and tribological performance of the Si doped Al_0.2Co_1.5CrFeNi_1.5Ti_0.5 high entropy alloys (HEAs) were investigated and compared with conventional wear-resistant alloy Stelite-6. The addition of the Si promoted the formation of the silicide (Ti₅Si₃ and TiSi) in FCC-structured HEAs. The interstitial solid solution strengthening of the Si and the second phase strengthening of the silicide increased the hardness of the HEAs, but reduced compressive strength and fracture toughness. Si doped HEAs showed excellent tribological performance as the friction coefficient decreased monotonously with increasing temperature and Si content. The wear resistance was proportional to compressive strength and fracture toughness. At 800 °C, the wear resistance of the HEAs was about 17 times higher than that of Stelite-6, which was attributed to the good mechanical properties and nano oxide glaze layer on the worn surface
Keyword	Si doped high entropy alloyMechanical propertiesTribological propertiesNano oxide glaze layer
MOST Discipline Catalogue	工学::材料科学与工程（可授工学、理学学位）
DOI	https://doi.org/10.1016/j.jallcom.2021.159122
Indexed By	SCI
If	5.316
Language	英语
compositor	第一作者单位
Citation statistics	Cited Times:34[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.licp.cn/handle/362003/27903
Collection	中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心
Affiliation	1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics 2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences
Recommended Citation GB/T 7714	Xin BB,Zhang AJ,Han JS,et al. Improving mechanical properties and tribological performance of Al0.2Co1.5CrFeNi1.5Ti0.5 high entropy alloys via doping Si[J]. Journal of Alloys and Compounds,2021,869(2021):159122.
APA	Xin BB,Zhang AJ,Han JS,&Meng JH.(2021).Improving mechanical properties and tribological performance of Al0.2Co1.5CrFeNi1.5Ti0.5 high entropy alloys via doping Si.Journal of Alloys and Compounds,869(2021),159122.
MLA	Xin BB,et al."Improving mechanical properties and tribological performance of Al0.2Co1.5CrFeNi1.5Ti0.5 high entropy alloys via doping Si".Journal of Alloys and Compounds 869.2021(2021):159122.

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