Effects of Ti Content on the Microstructure and Mechanical Properties of Al0.2CoCrFeNi2Tix High-Entropy Alloys

被引：1
|
作者：
Yang, Fan [1 ]
Fu, Wenqing [1 ]
Jian, Menglu [1 ]
Hu, Qiannan [1 ]
Liu, Min [1 ]
Li, Guangshi [2 ,3 ]
Wang, Zhanyong [1 ]
Li, Fangjie [4 ]
Shen, Qin [5 ]
机构：
[1] Shanghai Inst Technol, Sch Mat Sci & Engn, 100 Haiquan Rd, Shanghai 201418, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, 99 Shangda Rd, Shanghai 200444, Peoples R China
[3] Shanghai Univ, State Key Lab Adv Special Steel, 99 Shangda Rd, Shanghai 200444, Peoples R China
[4] Shanghai Univ Engn Sci, Sch Mat Sci & Engn, Shanghai 201620, Peoples R China
[5] Shanghai Univ Engn Sci, Sch Mech & Automot Engn, 333 Longteng Rd, Shanghai 201620, Peoples R China
来源：
METALS AND MATERIALS INTERNATIONAL | 2024年
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
High-entropy Alloy; Precipitation; Strengthening Mechanism; Mechanical Property; Microstructure; PRECIPITATION BEHAVIOR; CREEP-BEHAVIOR; STRENGTH; NI; MULTICOMPONENT; TENSILE; NANOPARTICLES; DEFORMATION; FRACTURE; CR;
D O I：
10.1007/s12540-024-01803-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two high entropy alloys (HEAs) with composition of Al0.2CoCrFeNi2Tix (x = 0.2, 0.4) were prepared through cold rolling and heat treatment to attained favorable mechanical properties and their microstructures were characterized to illustrate the strengthening mechanisms. The results found that the Ti0.4 alloy had high strength (1.34 GPa) via fine grain boundary strengthening and dislocation strengthening, while the existed larger and rod-shaped L1(2) phase caused its limited ductility (10.3%). The Ti0.2 alloy has high strength and plasticity and was superior to the conventional alloys, which was mainly attributed to the nano-sized L1(2) precipitation. The new HEAs are the potential materials to satisfy the needs of contemporary engineering applications and provides reference ideas for designing multi-element metal materials for future applications.
引用
收藏
页码：981 / 993
页数：13
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