Microwave vacuum sintering of FeCoNi1.5CuB0.5Y0.2 high-entropy alloy: Effect of heat treatment on microstructure and mechanical property

被引：29

作者：

Wang, C. W. ^{[1
]}

Wang, H. M. ^{[1
]}

Li, G. R. ^{[1
]}

Liu, M. ^{[1
]}

Zhang, D. ^{[1
]}

Wen, H. R. ^{[1
]}

Ren, W. X. ^{[1
]}

Gao, L. P. ^{[1
]}

Chen, J. J. ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China

来源：

VACUUM | 2020年 / 181卷

基金：

中国国家自然科学基金;

关键词：

High-entropy alloy; Microwave vacuum sintering; Heat treatment; Microstructure; Mechanical property; PHASE-FORMATION; STRENGTH; DESIGN; FE; NI; RESISTANCE; STABILITY; ELEMENTS;

D O I：

10.1016/j.vacuum.2020.109738

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Face-centered-cubic (FCC) type high-entropy alloys (HEAs) exhibit outstanding ductility, but their performance is still inferior to body-centered-cubic (BCC) type HEAs, limiting its structural applications. The addition of boron (B) has effectively improved the strength, but it induces severe embrittlement because of the formation of M3B (M = Fe, Co, Ni) borides. In this paper, FeCoN4.6CuB0.6Y0.2 HEA was obtained by high-energy ball milling and microwave vacuum sintering process. Besides, the effects of annealing temperature on microstructural and mechanical properties were investigated. The specimen annealed at 950 degrees C exhibited moderate grain growth, and copper (Cu) precipitated in the FCC solid solution at 900 degrees C. The hexagonal close-packed (HCP) phase was piled up in blocks, and particles of YB6-type precipitated. Overall performance improvement of the material was the greatest by annealing at 1050 degrees C.

引用

页数：9

共 50 条

[1] MECHANISMS FOR NONTHERMAL EFFECTS ON IONIC MOBILITY DURING MICROWAVE PROCESSING OF CRYSTALLINE SOLIDS [J].

BOOSKE, JH ;

COOPER, RF ;

DOBSON, I .

JOURNAL OF MATERIALS RESEARCH, 1992, 7 (02) :495-501

[2] Microstructural development in equiatomic multicomponent alloys [J].

Cantor, B ;

Chang, ITH ;

Knight, P ;

Vincent, AJB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 375 :213-218

[3] Composition design of high entropy alloys using the valence electron concentration to balance strength and ductility [J].

Chen, Ruirun ;

Qin, Gang ;

Zheng, Huiting ;

Wang, Liang ;

Su, Yanqing ;

Chiu, YuLung ;

Ding, Hongsheng ;

Guo, Jingjie ;

Fu, Hengzhi .

ACTA MATERIALIA, 2018, 144 :129-137

[4] Peculiarities of the neck growth process during initial stage of spark-plasma, microwave and conventional sintering of WC spheres [J].

Demirskyi, Dmytro ;

Borodianska, Hanna ;

Agrawal, Dinesh ;

Ragulya, Andrey ;

Sakka, Yoshio ;

Vasylkiv, Oleg .

JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 523 :1-10

[5] 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

[6] Effects of electro-negativity on the stability of topologically close-packed phase in high entropy alloys [J].

Dong, Yong ;

Lu, Yiping ;

Jiang, Li ;

Wang, Tongmin ;

Li, Tingju .

INTERMETALLICS, 2014, 52 :105-109

[7] Tensile properties of high- and medium-entropy alloys [J].

Gali, A. ;

George, E. P. .

INTERMETALLICS, 2013, 39 :74-78

[8] Strengthening mechanisms in equiatomic ultrafine grained AlCoCrCuFeNi high-entropy alloy studied by micro- and nanoindentation methods [J].

Ganji, Ramya Sree ;

Karthik, P. Sai ;

Rao, K. Bhanu Sankara ;

Rajulapati, Koteswararao V. .

ACTA MATERIALIA, 2017, 125 :58-68

[9] Microwave combustion synthesis and sintering of intermetallics and alloys [J].

Gedevanishvili, S ;

Agrawal, D ;

Roy, R .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1999, 18 (09) :665-668

[10] Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys [J].

Guo, Sheng ;

Ng, Chun ;

Lu, Jian ;

Liu, C. T. .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (10)

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