Engineering heterostructured grains to enhance strength in a single-phase high-entropy alloy with maintained ductility

被引：94

作者：

Fu, Zhiqiang ^{[1
,2
]}

MacDonald, Benjamin E. ^{[1
]}

Li, Zhiming ^{[3
]}

Jiang, Zhenfei ^{[2
]}

Chen, Weiping ^{[2
]}

Zhou, Yizhang ^{[1
]}

Lavernia, Enrique J. ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Mat Sci & Engn, Irvine, CA 92697 USA

[2] South China Univ Technol, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Guangdong, Peoples R China

[3] Max Planck Inst Eisenforsch GmbH, Dusseldorf, Germany

来源：

MATERIALS RESEARCH LETTERS | 2018年 / 6卷 / 11期

关键词：

High entropy alloy; heterostructure; single-phase; strength; ductility; MECHANICAL-PROPERTIES; STRAIN; BEHAVIOR; DEFORMATION; DESIGN;

D O I：

10.1080/21663831.2018.1526222

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Coarse-grained (CG) single-phase face-centered cubic (fcc) high-entropy alloys (HEAs) normally show insufficient room temperature strength. Here we design and implement a heterogeneous grain structure to strengthen a single-phase fcc Fe29Ni29Co28Cu7Ti7 HEA. Significantly, the heterostructured (HS) fcc HEA shows a dramatic enhancement (increasing from approximate to 350 to approximate to 614MPa) in tensile yield strength as compared to its CG counterpart. As a result of its extraordinary work-hardening ability arising from the heterogeneous grain structure, the novel HS HEA exhibits a very high ultimate strength of approximate to 1308MPa, and a good ductility of approximate to 23.1% which is almost identical to that of its CG counterpart. [GRAPHICS] IMPACT STATEMENTIntroducing a heterogeneous grain structure to a soft fcc Fe29Ni29Co28Cu7Ti7 HEA, the heterostructured HEA shows significantly enhanced strengths at an essentially identical ductility as compared to the CG counterpart.

引用

页码：634 / 640

页数：7

共 32 条

[1] Simultaneous Strength-Ductility Enhancement of a Nano-Lamellar AlCoCrFeNi2.1 Eutectic High Entropy Alloy by Cryo-Rolling and Annealing [J].

Bhattacharjee, T. ;

Wani, I. S. ;

Sheikh, S. ;

Clark, I. T. ;

Okawa, T. ;

Guo, S. ;

Bhattacharjee, P. P. ;

Tsuji, N. .

SCIENTIFIC REPORTS, 2018, 8

[2] Heavy carbon alloyed FCC-structured high entropy alloy with excellent combination of strength and ductility [J].

Chen, L. B. ;

Wei, R. ;

Tang, K. ;

Zhang, J. ;

Jiang, F. ;

He, L. ;

Sun, J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 716 :150-156

[3] Influence of heat treatment on microstructure, mechanical behavior, and soft magnetic properties in an fcc-based Fe29Co28Ni29Cu7Ti7 high-entropy alloy [J].

Fu, Zhiqiang ;

MacDonald, Benjamin E. ;

Monson, Todd C. ;

Zheng, Baolong ;

Chen, Weiping ;

Lavernia, Enrique J. .

JOURNAL OF MATERIALS RESEARCH, 2018, 33 (15) :2214-2222

[4] A fracture-resistant high-entropy alloy for cryogenic applications [J].

Gludovatz, Bernd ;

Hohenwarter, Anton ;

Catoor, Dhiraj ;

Chang, Edwin H. ;

George, Easo P. ;

Ritchie, Robert O. .

SCIENCE, 2014, 345 (6201) :1153-1158

[5] A precipitation-hardened high-entropy alloy with outstanding tensile properties [J].

He, J. Y. ;

Wang, H. ;

Huang, H. L. ;

Xu, X. D. ;

Chen, M. W. ;

Wu, Y. ;

Liu, X. J. ;

Nieh, T. G. ;

An, K. ;

Lu, Z. P. .

ACTA MATERIALIA, 2016, 102 :187-196

[6] Phase-Transformation Ductilization of Brittle High-Entropy Alloys via Metastability Engineering [J].

Huang, Hailong ;

Wu, Yuan ;

He, Junyang ;

Wang, Hui ;

Liu, Xiongjun ;

An, Ke ;

Wu, Wei ;

Lu, Zhaoping .

ADVANCED MATERIALS, 2017, 29 (30)

[7]

Humphreys FJ, 2004, RECRYSTALLIZATION RE

[8] Microstructural stability and mechanical behavior of FeNiMnCr high entropy alloy under ion irradiation [J].

Kumar, N. A. P. Kiran ;

Li, C. ;

Leonard, K. J. ;

Bei, H. ;

Zinkle, S. J. .

ACTA MATERIALIA, 2016, 113 :230-244

[9] Metastable high-entropy dual-phase alloys overcome the strength-ductility trade-off [J].

Li, Zhiming ;

Pradeep, Konda Gokuldoss ;

Deng, Yun ;

Raabe, Dierk ;

Tasan, Cemal Cem .

NATURE, 2016, 534 (7606) :227-+

[10] Towards strength-ductility synergy through the design of heterogeneous nanostructures in metals [J].

Ma, Evan ;

Zhu, Ting .

MATERIALS TODAY, 2017, 20 (06) :323-331

← 1 2 3 4 →