A dual-phase Fe-Co-Ni-Cr-Mn high entropy alloy thin film with superior strength and corrosion-resistance

被引：1
|
作者：
Cao, Qingping [1 ]
Wang, Nan [1 ]
Kim, Jae-Moo [2 ]
Caron, Arnaud [2 ,3 ]
Zhang, Zhipeng [4 ]
Zhou, Haofei [4 ]
Wang, Xiaodong [1 ]
Ding, Shaoqing [1 ]
Zhang, Dongxian [1 ,5 ]
Jiang, Jian-Zhong [1 ]
机构：
[1] Zhejiang Univ, Int Ctr New Struct Mat ICNSM, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
[2] Korea Univ Technol & Educ, Sch Energy Mat Chem Engn, Cheonan 31253, South Korea
[3] Liaoning Acad Mat, Herbert Gleiter Int Inst, Shenyang 110167, Peoples R China
[4] Zhejiang Univ, Ctr X Mech, Dept Engn Mech, Hangzhou 310027, Peoples R China
[5] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1003卷
基金：
中国国家自然科学基金;
关键词：
High-entropy alloy; Thin films; Mechanical properties; Corrosion resistance; HALL-PETCH RELATIONSHIP; MECHANICAL-PROPERTIES; SIGMA-PHASE; OXIDATION; SIZE; CRMNFECONI; BEHAVIOR; SURFACE; ENERGY; OXIDE;
D O I：
10.1016/j.jallcom.2024.175551
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：
Improving the mechanical properties of high-entropy alloys (HEAs) with a face-centered cubic (fcc) structure is critical for their potential applications. In this work, a Fe-Co-Ni-Cr-Mn thin film was prepared and deposited with a power of 360 W. This alloy thin film exhibits a dual-phase microstructure consisting of a fcc matrix and sigma phase (sigma phase) precipitates. The 360W-film shows ultra-high strength-ductility synergy, with a hardness of 10.4 GPa, yield strength of 6.2 GPa, and a fracture strain of -25 % (micro-pillar compression tests). The excellent mechanical properties can be mainly attributed to the grain size effect, the hardening effect of the sigma precipitates, and deformation twinning. Moreover, this alloy thin film exhibits excellent tribological performances and corrosion resistance. Our results demonstrate high potential of the dual-phase HEA thin film for industrial applications as high-performance protective coating materials.
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页数：16
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