Precipitation-strengthened refractory Al0.5CrNbTi2V0.5 high entropy alloy

被引：122

作者：

Stepanov, N. D. ^{[1
]}

Yurchenko, N. Yu. ^{[1
]}

Panina, E. S. ^{[1
]}

Tikhonovsky, M. A. ^{[2
]}

Zherebtsov, S. V. ^{[1
]}

机构：

[1] Belgorod State Univ, Lab Bulk Nanostruct Mat, Belgorod 308015, Russia

[2] Kharkov Inst Phys & Technol NAS Ukraine, Natl Sci Ctr, UA-61108 Kharkov, Ukraine

来源：

MATERIALS LETTERS | 2017年 / 188卷

基金：

俄罗斯科学基金会;

关键词：

High entropy alloy; Metals and alloys; Cast; Crystal structure; Mechanical properties; PRINCIPAL ELEMENT ALLOYS; MECHANICAL-PROPERTIES; LOW-DENSITY; MICROSTRUCTURE; EXPLORATION; X=0;

D O I：

10.1016/j.matlet.2016.11.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structure and mechanical properties of a new Al0.5CrNbTi2V0.5 high entropy alloy in the as-cast and annealed at 1200 degrees C for 24 h conditions are reported. In the as-cast condition the alloy has single body-centered cubic (bcc) phase structure. After annealing relatively fine and homogeneously distributed particles of Laves phase form in the bcc matrix. The precipitation of the second phase particles is accompanied by an increase in the yield strength and decrease in ductility determined in compression at room temperature. With increase of the testing temperature to 1000 degrees C, the strength of the alloy decreases and ductility increases. The experimental phase composition.of the alloy is compared with predicted equilibrium phases and possible ways to tailor the structure of the alloy to increase the mechanical properties further are discussed.

引用

页码：162 / 164

页数：3

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