Microstructure and mechanical property of the novel Al17Cr17Co33Ni33 eutectic medium entropy alloy fabricated by powder plasma arc additive manufacturing

被引：3
作者：
Su, Chuanchu [1 ,2 ]
Konovalov, Sergey [2 ]
Chen, Xizhang [1 ]
Wang, Yanhu [1 ]
Jin, Yuhui [1 ]
机构：
[1] Wenzhou Univ, Coll Mech & Elect Engn, Zhejiang Prov Key Lab Laser Proc Robot, Wenzhou 325035, Zhejiang, Peoples R China
[2] Samara Univ, Dept Met Technol & Aviat Mat, Moskovskoye Shosse, Samara 443086, Russia
来源：
MATERIALS LETTERS | 2024年 / 361卷
基金：
中国国家自然科学基金;
关键词：
Metals and alloys; Powder plasma arc additive manufacturing; Eutectic medium entropy alloy; Microstructure; Mechanical properties;
D O I：
10.1016/j.matlet.2024.136074
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, a new Al17Cr17Co33Ni33 eutectic medium entropy alloy (EMEA) is designed and successfully fabricated by powder plasma arc additive manufacturing (PPA-AM). The microstructural investigation reveals that the alloy consists of ordered hard body-centered cubic B2 phase and ordered soft face-centered cubic L12 phase. The microhardness of the alloy is 335.54 Hv. And comparing to PPA-AMed AlCoCrFeNi2.1 alloy, the designed alloy exhibits a high ultimate tensile strength of 1028 MPa and a high ductility of 19.09 % at the room temperature. And this represents a 17.89 %/32.57 % increase in ultimate tensile strength and ductility relative to a PPA-AMed AlCoCrFeNi2.1 alloy, respectively. This is attributed to the phase interfacial strengthening caused by finer lamellar thickness. And the mechniacal properties reveal the Al17Cr17Co33Ni33 alloy achieve the synergy of good tensile ductility and high fracture strength.
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页数：4
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