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

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