首页|添加微量B元素对Al19Co20Fe20Ni41共晶高熵合金显微组织及性能的影响

添加微量B元素对Al19Co20Fe20Ni41共晶高熵合金显微组织及性能的影响

Effects of minor B addition on microstructure and properties of Al19Co20Fe20Ni41 eutectic high-entropy alloy

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同时强化合金的力学性能和磁性能是软磁材料的理想化制备策略.通过制备非等原子比的Al19Co20Fe20Ni41共晶高熵合金,研究硼元素合金化对显微组织演变、相形成、力学性能和软磁性能的影响.随着B含量的增加,(Al19Co20Fe20Ni41)100-xBx合金的显微组织从最初的层片状共晶组织(x=0)转变为离异共晶组织(x>0.6).细小的硼化物从晶间相中析出(x≥0.6).合金的硬度从HV 328.66增加到HV 436.34.压缩力学性能测试结果显示合金发生从塑性材料向脆性材料的转变.Al19Co20Fe20Ni41合金具有良好的软磁性能,微量的B添加对其软磁性能的影响很微弱.当用作软磁性材料时,合金电阻率的增加可以有效地减少涡流损耗.
The simultaneous strengthening of mechanical and magnetic properties is an ideal fabrication strategy for soft-magnetic materials. A non-equiatomic Al19Co20Fe20Ni41 eutectic high-entropy alloy was prepared to investigate the alloying effect of B on the microstructure evolution, phase formation, mechanical and soft-magnetic properties. With the increase in B content, the microstructures of (Al19Co20Fe20Ni41)100-xBx alloys transformed from the initial lamellar eutectic structure (x=0) to the divorced eutectic structure (x>0.6). Fine borides precipitated in the intergranular phase (x≥0.6). The hardness of alloys increased from HV 328.66 to HV 436.34 and the compression mechanical performance displayed a transition from plastic material to brittle material. The Al19Co20Fe20Ni41 alloy possesses good soft-magnetic properties, and the minor B addition has little effect on it. Increasing the resistivity can effectively reduce the eddy current loss when used as a soft-magnetic material.

high-entropy alloyB elementmicrostructuremechanical propertiessoft-magnetic properties

冯俊杰、高硕、韩昆、苗屹冬、戚继球、委福祥、任耀剑、占珍珍、隋艳伟、孙智、曹鹏

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中国矿业大学 材料与物理学院 江苏省高效储能技术与装备工程实验室,徐州 221116

Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand

高熵合金 硼元素 显微组织 力学性能 软磁特性

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaXuzhou Achievements Transformation ProjectXuzhou Achievements Transformation Project

5167121451871238KC19235China

2021

10.1016/S1003-6326(21)65560-7

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(4)
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