CrFeCoNiB0.05Tix高熵合金的显微组织和力学性能

doi:10.13251/j.issn.0254-6051.2022.08.009

金属热处理 ›› 2022, Vol. 47 ›› Issue (8): 58-62.DOI: 10.13251/j.issn.0254-6051.2022.08.009

CrFeCoNiB_0.05Ti_x高熵合金的显微组织和力学性能

姜越, 朱柏祥, 李秀明, 谭亚平

哈尔滨理工大学材料科学与化学工程学院, 黑龙江哈尔滨 150080

收稿日期:2022-03-11 修回日期:2022-06-20 出版日期:2022-08-25 发布日期:2022-09-19
作者简介:姜越(1963—),男,教授,博士,主要研究方向为高熵合金,E-mail:yjiang@hrbust.edu.cn。
基金资助:
黑龙江省优秀青年基金(YQ2020E031)

Microstructure and mechanical properties of CrFeCoNiB_0.05Ti_x high-entropy alloy

Jiang Yue, Zhu Baixiang, Li Xiuming, Tan Yaping

School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin Heilongjiang 150080, China

Received:2022-03-11 Revised:2022-06-20 Online:2022-08-25 Published:2022-09-19

摘要/Abstract

摘要： 采用机械合金化和放电等离子烧结工艺制备了CrFeCoNiB_0.05Ti_x(x=0.2、0.4、0.6、0.8、1.0)高熵合金材料,通过X射线衍射分析、扫描电镜观察和能谱分析以及维氏硬度测试和压缩强度测试等,研究了Ti含量对高熵合金微观组织和力学性能的影响。结果表明,CrFeCoNiB_0.05Ti_x(x=0.2、0.4、0.6、0.8、1.0)高熵合金由FCC、BCC和α相组成。当x=1.0时,合金由BCC结构转向HCP结构并析出新相Laves相,其具有最高硬度416.54 HV0.2。当x=0.8时,合金达到最大抗压强度586.3 MPa。

关键词: 高熵合金, 放电等离子烧结, 力学性能, 微观组织

Abstract: In order to study the effect of Ti content on microstructure and mechanical properties of high-entropy alloys, the CrFeCoNiB_0.05Ti_x(x=0.2,0.4,0.6,0.8,1.0) high-entropy alloy was prepared by mechanical alloying and spark-plasma sintering, then the microstructure was analyzed by X-ray diffraction, scanning electron microscope observation, energy spectrum analysis, and the properties were analyzed by Vickers hardness test and compressive strength test. The results show that the CrFeCoNiB_0.05Ti_x(x=0.2,0.4,0.6,0.8,1.0) high-entropy alloy is composed of FCC, BCC and α phases. Moreover, when x is 1.0, the alloy changes from BCC structure to HCP structure, and a new Laves phase is precipitated, the alloy has the highest hardness of 416.54 HV0.2. When x is 0.8, the alloy reaches the maximum compressive strength of 586.3 MPa.

Key words: high-entropy alloy, spark-plasma sintering, mechanical properties, microstructure

中图分类号:

TG113

姜越, 朱柏祥, 李秀明, 谭亚平. CrFeCoNiB_0.05Ti_x高熵合金的显微组织和力学性能[J]. 金属热处理, 2022, 47(8): 58-62.

Jiang Yue, Zhu Baixiang, Li Xiuming, Tan Yaping. Microstructure and mechanical properties of CrFeCoNiB_0.05Ti_x high-entropy alloy[J]. Heat Treatment of Metals, 2022, 47(8): 58-62.

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CrFeCoNiB_0.05Ti_x高熵合金的显微组织和力学性能

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CrFeCoNiB0.05Tix高熵合金的显微组织和力学性能

Microstructure and mechanical properties of CrFeCoNiB0.05Tix high-entropy alloy

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CrFeCoNiB_0.05Ti_x高熵合金的显微组织和力学性能

Microstructure and mechanical properties of CrFeCoNiB_0.05Ti_x high-entropy alloy