B原子促进高熵合金FCC2相的形成机制

材料导报

2021, Vol. 35

Issue (z2): 381-384

金属与金属基复合材料

B原子促进高熵合金FCC₂相的形成机制

侯丽丽¹, 郭强², 要玉宏³, 刘江南³

1 陕西工业职业技术学院材料工程学院,咸阳 712000
2 西部超导材料科技股份有限公司,西安 710018
3 西安工业大学材料与化工学院,西安 710021

Mechanism of B Atom Promoting Formation of FCC₂ Phase in High Entropy Alloy

HOU Lili¹, GUO Qiang², YAO Yuhong³, LIU Jiangnan³

1 School of Materials Science and Engineering, Shaanxi Polytechnic Institute, Xianyang 712000, China
2 Western Superconducting Technologies Co., Ltd, Xi'an 710018, China
3 School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China

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摘要采用真空电弧熔炼炉制备了CoFeNiMnB_x高熵合金,并对其微观组织和凝固过程进行研究。结果表明,合金中加入B原子后,合金的凝固方式发生了改变,B原子促进FCC₂相的形成,随B含量的增加,合金的组织由单一的FCC₁相转变为FCC₁相+FCC₂相(块状或条状富B元素和Co元素的FCC₂相及其上弥散分布的颗粒状富Ni元素的FCC₂相)。

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	侯丽丽
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关键词: 高熵合金 B FCC₂ 形成机制

Abstract: CoFeNiMnB_x high entropy alloy was prepared by vacuum arc melting furnace, and its microstructure and solidification process were studied. The results show that with the increase of B content, the microstructure of the alloy changes from single FCC₁ phase to FCC₁ + FCC₂ phase (block or strip FCC₂ phase rich in B and Co and granular FCC₂ phase rich in Ni). The solid solubility of B atom in the alloy and the matrix alloy is small. During the solidification process, B atom is easy to accumulate in the solid-liquid front, which changes the solidification mode of the alloy, causes partial aggregation of some elements in the alloy, and changes the solidification mode of the alloy. B atom promotes the formation of FCC₂ phase.

Key words: high entropy alloy B FCC₂ formation mechanism

发布日期: 2021-12-09

ZTFLH:

TG139

通讯作者: houlili1983@126.com

作者简介: 侯丽丽,陕西工业职业技术学院讲师。2020年12月,在西安工业大学获得工学博士学位,毕业后进入陕西工业职业技术学院任教。以第一作者在国内外学术期刊上发表论文10余篇。研究工作主要为高熵合金、铝基复合材料等。

引用本文:

侯丽丽, 郭强, 要玉宏, 刘江南. B原子促进高熵合金FCC₂相的形成机制[J]. 材料导报, 2021, 35(z2): 381-384.
HOU Lili, GUO Qiang, YAO Yuhong, LIU Jiangnan. Mechanism of B Atom Promoting Formation of FCC₂ Phase in High Entropy Alloy. Materials Reports, 2021, 35(z2): 381-384.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2021/V35/Iz2/381

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