Probing the Respective Strengthening Mechanism of High-entropy (CoCrFeNi/CoCrFeNiMn) and Single-principle-element (Cu-4Al) Alloys

被引：4

作者：

Fan, Liwen ^{[1
,2
]}

Zhou, Jian ^{[1
]}

Fang, Xiaotian ^{[3
]}

Wang, Yanfei ^{[4
]}

Ma, Xiaolong ^{[3
,6
]}

Tsai, Ming-Hung ^{[5
]}

Zhu, Yuntian ^{[6
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Peoples R China

[2] China Energy Sci & Technol Res Inst, Nanjing 210023, Peoples R China

[3] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[4] Xi An Jiao Tong Univ, Sch Aerosp, State Key Lab Mech Struct Strength & Vibrat, Xian 710049, Peoples R China

[5] Natl Chung Hsing Univ, Dept Mat Sci & Engn, Taichung 402, Taiwan

[6] City Univ Hong Kong, Hong Kong Inst Adv Study, Coll Sci & Engn, Dept Mat Sci & Engn, Hong Kong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 969卷

关键词：

High-entropy alloys; Mechanical properties; Deformation mechanism; Lomer-Cottrell locks; SHORT-RANGE ORDER; CU-AL ALLOYS; DEFORMATION MECHANISMS; GRAIN-GROWTH; PHASE; MICROSTRUCTURE; EVOLUTION; DISLOCATIONS; STABILITY; BEHAVIOR;

D O I：

10.1016/j.jallcom.2023.172185

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The strengthening mechanism of high-entropy alloys (CoCrFeNi/CoCrFeNiMn) is investigated and compared with a single-principle-element alloy (Cu-4Al) with similar stacking fault energy. Hall-Petch effect dominates the strain hardening of both alloys during progressive grain refinement to the ultrafine regime. Moreover, the high density of Lomer-Cottrell locks offers unique and extra hardening to ultrafine-grained high-entropy alloys.

引用

页数：6

共 47 条

[41] Lomer-Cottrell locks with multiple stair-rod dislocations in a nanostructured Al alloy processed by severe plastic deformation [J].

Yan, Zhigang ;

Lin, Yaojun .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 747 :177-184

[42] Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes [J].

Yeh, JW ;

Chen, SK ;

Lin, SJ ;

Gan, JY ;

Chin, TS ;

Shun, TT ;

Tsau, CH ;

Chang, SY .

ADVANCED ENGINEERING MATERIALS, 2004, 6 (05) :299-303

[43] Short-range order and its impact on the CrCoNi medium-entropy alloy [J].

Zhang, Ruopeng ;

Zhao, Shiteng ;

Ding, Jun ;

Chong, Yan ;

Jia, Tao ;

Ophus, Colin ;

Asta, Mark ;

Ritchie, Robert O. ;

Minor, Andrew M. .

NATURE, 2020, 581 (7808) :283-+

[44] Microstructures and properties of high-entropy alloys [J].

Zhang, Yong ;

Zuo, Ting Ting ;

Tang, Zhi ;

Gao, Michael C. ;

Dahmen, Karin A. ;

Liaw, Peter K. ;

Lu, Zhao Ping .

PROGRESS IN MATERIALS SCIENCE, 2014, 61 :1-93

[45] Nanoscale origins of the damage tolerance of the high-entropy alloy CrMnFeCoNi [J].

Zhang, ZiJiao ;

Mao, M. M. ;

Wang, Jiangwei ;

Gludovatz, Bernd ;

Zhang, Ze ;

Mao, Scott X. ;

George, Easo P. ;

Yu, Qian ;

Ritchie, Robert O. .

NATURE COMMUNICATIONS, 2015, 6

[46] Effect of grain size on the strain rate sensitivity of CoCrFeNi high-entropy alloy [J].

Zhao, Yakai ;

Wang, Xutao ;

Cao, Tangqing ;

Han, Jae-Kyung ;

Kawasaki, Megumi ;

Jang, Jae-il ;

Han, Heung Nam ;

Ramamurty, Upadrasta ;

Wang, Lu ;

Xue, Yunfei .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 782

[47] Deformation twinning in nanocrystalline materials [J].

Zhu, Y. T. ;

Liao, X. Z. ;

Wu, X. L. .

PROGRESS IN MATERIALS SCIENCE, 2012, 57 (01) :1-62

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