High entropy alloy borides prepared by powder metallurgy process and the enhanced fracture toughness by addition of yttrium

被引：27
作者：
Long, Ying [1 ]
Che, Jintao [1 ]
Wu, Zong [1 ]
Lin, Hua-Tay [1 ]
Zhang, Fenglin [1 ]
机构：
[1] Guangdong Univ Technol, Sch Electromech Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2021年 / 257卷
基金：
中国国家自然科学基金;
关键词：
High entropy alloy; Microstructure; Mechanical properties; MECHANICAL-PROPERTIES; WEAR-RESISTANCE; MICROSTRUCTURE; TEMPERATURE; BORON; BEHAVIOR; CORROSION; CAST;
D O I：
10.1016/j.matchemphys.2020.123715
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High entropy alloy borides FeCoNiAlCrBx (x = 0.5 and 1.0 in molar ratio) were prepared by high energy ball milling and spark plasma sintering (SPS). Pure high entropy alloy FeCoNiAlCr was prepared for comparison. The effect of boron content on alloying behavior, phase composition, microstructure, micro hardness, and fracture toughness of the as-prepared samples were studied. The results showed that, with the increase of boron content, the hardness of FeCoNiAlCr alloy increased significantly in the cost of embrittlement due to decrease/disappear of FCC phase as well as the formation/increase of borides enriched in Fe and Cr elements. The borides were found to be distributed uniformly at the grain boundaries. The toughness of FeCoNiAlCrB was found to be increased by about 40% with only small sacrifice of hardness when 0.1 molra ratio of Yttrium (Y) was introduced. The enhanced fracture toughness could be probably attributed to the more uniformly distribution of brittle borides phases and the increase of the solid solution of boron in the alloy.
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页数：8
相关论文
共 34 条
[1]   Effects of prior austenite grain size on impression creep and microstructure in simulated heat affected zones of boron modified P91 steels [J].
Akhtar, Modassir ;
Khajuria, Akhil .
MATERIALS CHEMISTRY AND PHYSICS, 2020, 249
[2]   Effects of boron modifications on phase nucleation and dissolution temperatures and mechanical properties in 9%Cr steels: sensitivity and stability [J].
Akhtar, Modassir ;
Khajuria, Akhil ;
Pandey, Manish Kumar ;
Ahmed, Iqbal .
MATERIALS RESEARCH EXPRESS, 2019, 6 (12)
[3]   Phase transformations and numerical modelling in simulated HAZ of nanostructured P91B steel for high temperature applications [J].
Akhtar, Modassir ;
Khajuria, Akhil ;
Sahu, Jitendra K. ;
Swaminathan, J. ;
Kumar, Rajneesh ;
Bedi, Raman ;
Albert, Shaju K. .
APPLIED NANOSCIENCE, 2018, 8 (07) :1669-1685
[4]   Effects of milling time, sintering temperature, Al content on the chemical nature, microhardness and microstructure of mechanochemically synthesized FeCoNiCrMn high entropy alloy [J].
Alcala, M. D. ;
Real, C. ;
Fombella, I. ;
Trigo, I. ;
Cordoba, J. M. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 749 :834-843
[5]   High entropy alloy thin films deposited by magnetron sputtering of powder targets [J].
Braeckman, B. R. ;
Boydens, F. ;
Hidalgo, H. ;
Dutheil, P. ;
Jullien, M. ;
Thomann, A. -L. ;
Depla, D. .
THIN SOLID FILMS, 2015, 580 :71-76
[6]  
Chen GJ, 2015, RARE METAL MAT ENG, V44, P1418
[7]   Effect of the substitution of Co by Mn in Al-Cr-Cu-Fe-Co-Ni high-entropy alloys [J].
Chen, Hsuan-You ;
Tsai, Che-Wei ;
Tung, Chung-Chin ;
Yeh, Jien-Wei ;
Shun, Tao-Tsung ;
Yang, Chih-Chao ;
Chen, Swe-Kai .
ANNALES DE CHIMIE-SCIENCE DES MATERIAUX, 2006, 31 (06) :685-698
[8]   Elevated-Temperature Corrosion of CoCrCuFeNiAl0.5Bx High-Entropy Alloys in Simulated Syngas Containing H2S [J].
Dogan, Omer N. ;
Nielsen, Benjamin C. ;
Hawk, Jeffrey A. .
OXIDATION OF METALS, 2013, 80 (1-2) :177-190
[9]   FRACTURE TOUGHNESS DETERMINATIONS BY INDENTATION [J].
EVANS, AG ;
CHARLES, EA .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1976, 59 (7-8) :371-372
[10]   The Influence of Chromium Content on the Structural and Mechanical Properties of AlCrxFeCoNi High Entropy Alloys [J].
Geanta, Victor ;
Voiculescu, Ionelia ;
Istrate, Bogdan ;
Vranceanu, Diana M. ;
Ciocoiu, Robert ;
Cotrut, Cosmin M. .
INTERNATIONAL JOURNAL OF ENGINEERING RESEARCH IN AFRICA, 2018, 37 :23-28
1234