Effects of Annealing on Microstructure, Mechanical and Electrical Properties of AlCrCuFeMnTi High Entropy Alloy

被引：0

作者：

NONG Zhisheng ^{[1
,2
]}

ZHU Jingchuan ^{[1
,2
]}

YANG Xiawei ^{[1
,2
]}

YU Hailing ^{[1
]}

LAI Zhonghong ^{[1
]}

机构：

[1] School of Materials Science and Engineering,Harbin Institute of Technology

[2] National Key Laboratory for Precision Hot Processing of Metals,Harbin Institute of Technology

来源：

Journal of Wuhan University of Technology(Materials Science) | 2013年 / 06期

关键词：

high entropy alloy; annealing; microstructure; mechanical properties; electrical conductivity;

D O I：

暂无

中图分类号：

TG156.2 [退火];

学科分类号：

080201 ; 080503 ;

摘要：

The multi-component AlCrCuFeMnTi high entropy alloy was prepared using a vacuum arc melting process. Serial annealing processes were subsequently performed at 590 ℃, 750 ℃, 955 ℃ and 1 100 ℃ respectively with a holding time of 4 h at each temperature. The effects of annealing on microstructure, mechanical and electrical properties of as-cast alloy were investigated by using differential thermal analysis(DTA), X-ray diffraction(XRD), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The experimental results show that two C14 hexagonal structures remain unchanged after annealing the as-cast AlCrCuFeMnTi alloy specimens being heated to 1 100 ℃. Both annealed and as-cast microstructures show typical cast-dendrite morphology and similar elemental segregation. The hardness of alloys declines as the annealing temperature increases while the strength of as-cast alloy improves obviously by the annealing treatment. The electrical conductivities of annealed and as-cast alloys are influenced by the distribution of interdendrite regions which is rich in Cu element.

引用

页码：1196 / 1200

页数：5

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