Tuning the mechanical properties of Fex(CoMoNi)100-x high-entropy alloys via controlled formation of hard μ phase

被引：18

作者：

Cheng, Zhuo ^{[1
]}

Zhu, Weiwei ^{[1
,2
]}

Yang, Lu ^{[1
]}

Zhao, Cancan ^{[1
]}

Wei, Pengbo ^{[1
,3
]}

Ren, Fuzeng ^{[1
]}

机构：

[1] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

[2] Univ Macau, Fac Sci & Technol, Inst Appl Phys & Mat Engn, Macau, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 773卷

关键词：

High-entropy alloys; Intermetallic compound; Mechanical properties; HALL-PETCH RELATIONSHIP; STRENGTHENING MECHANISMS; TEMPERATURE-DEPENDENCE; DISLOCATION NUCLEATION; TENSILE PROPERTIES; SINGLE-PHASE; PRECIPITATION; MICROSTRUCTURE; DUCTILITY; PLASTICITY;

D O I：

10.1016/j.msea.2019.138881

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single-phase face-centered cubic (fcc) high-entropy alloys (HEM) exhibits outstanding ductility but low strength, which hinders their practical applications. To overcome this dilemma, we propose a strategy to achieve an excellent combination of high compressive strength and failure strain via controlled formation of hard intermetallic compound in HEAs. Specifically, we vary the Fe content in FeCoMoNi HEM to control the relative content of mu phase embedded within the ductile fcc matrix and achieve a yield strength of 1877 MPa and an appreciable fracture strain of similar to 40% in Fe40Co20Mo20Ni20 HEA. The present work provides deep insight into the design of high-performance HEM.

引用

页数：7

共 60 条

[1] 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

[2] 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

[3] Alloying behavior, microstructure and mechanical properties in a FeNiCrCo0.3Al0.7 high entropy alloy [J].

Chen, Weiping ;

Fu, Zhiqiang ;

Fang, Sicong ;

Xiao, Huaqiang ;

Zhu, Dezhi .

MATERIALS & DESIGN, 2013, 51 :854-860

[4] Design of a twinning-induced plasticity high entropy alloy [J].

Deng, Y. ;

Tasan, C. C. ;

Pradeep, K. G. ;

Springer, H. ;

Kostka, A. ;

Raabe, D. .

ACTA MATERIALIA, 2015, 94 :124-133

[5] STRUCTURE OF MU-PHASE CO7MO6 [J].

FORSYTH, JB ;

DALTEDAV.LM .

ACTA CRYSTALLOGRAPHICA, 1962, 15 (JUN) :543-&

[6] A high-entropy alloy with hierarchical nanoprecipitates and ultrahigh strength [J].

Fu, Zhiqiang ;

Jiang, Lin ;

Wardini, Jenna L. ;

MacDonald, Benjamin E. ;

Wen, Haiming ;

Xiong, Wei ;

Zhang, Dalong ;

Zhou, Yizhang ;

Rupert, Timothy J. ;

Chen, Weiping ;

Lavernia, Enrique J. .

SCIENCE ADVANCES, 2018, 4 (10)

[7] Fcc nanostructured TiFeCoNi alloy with multi-scale grains and enhanced plasticity [J].

Fu, Zhiqiang ;

MacDonald, Benjamin E. ;

Zhang, Dalong ;

Wu, Bingyong ;

Chen, Weiping ;

Ivanisenko, Julia ;

Hahn, Horst ;

Lavernia, Enrique J. .

SCRIPTA MATERIALIA, 2018, 143 :108-112

[8] Microstructure and strengthening mechanisms in an FCC structured single-phase nanocrystalline Co25Ni25Fe25Al7.5Cu17.5 high-entropy alloy [J].

Fu, Zhiqiang ;

Chen, Weiping ;

Wen, Haiming ;

Zhang, Dalong ;

Chen, Zhen ;

Zheng, Baolong ;

Zhou, Yizhang ;

Lavernia, Enrique J. .

ACTA MATERIALIA, 2016, 107 :59-71

[9] Alloying behavior and deformation twinning in a CoNiFeCrAl0.6Ti0.4 high entropy alloy processed by spark plasma sintering [J].

Fu, Zhiqiang ;

Chen, Weiping ;

Fang, Sicong ;

Zhang, Dayue ;

Xiao, Huaqiang ;

Zhu, Dezhi .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 553 :316-323

[10] In situ TEM investigation on the precipitation behavior of μ phase in Ni-base single crystal superalloys [J].

Gao, Shuang ;

Liu, Zhi-Quan ;

Li, Cai-Fu ;

Zhou, Yizhou ;

Jin, Tao .

ACTA MATERIALIA, 2016, 110 :268-275

← 1 2 3 4 5 6 →