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

查看全文 作　　者：NONG [1]Zldsheng;NONG [1,2]Zldsheng;ZHU [1,2]Jingchuan;YANG [1,2]Xiawei;YU [1]Hailing;LAI [1]Zhonghong

机构地区：[1]School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;[2]National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》索引2013年第28卷第6期,共5页

基　　金：Funded by the 2012 Opening Funding of National Key Laboratory on Advanced Composites in Special Environment 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. 关键词：连续退火工艺铸造合金电气性能透射电子显微镜扫描电子显微镜 X-射线衍射熵元素偏析

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

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