Ti和B对热压制备的FeCoCrNi高熵合金组织和性能的影响

IF 1.9 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Powder Metallurgy Pub Date : 2022-01-29 DOI:10.1080/00325899.2022.2029302

Yicheng Zhang, Yanru Yang, Jifeng Zhang, Jiawen Li, He-guo Zhu, Zonghan Xie

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引用次数: 2

摘要

采用热压法制备(feccrni)100-3xTixB2x (x = 0,1,2和6at .-%)高熵合金(HEAs)。采用x射线电子衍射仪(XRD)、扫描电镜(SEM)和能谱仪(EDS)研究了Ti和B含量对合金微观结构和力学性能的影响。结果表明:feccrni高熵合金形成单一FCC相;随着Ti和B含量的增加，合金中出现了双FCC相。合金的延伸率呈先上升后下降的趋势，而极限抗拉强度呈上升趋势。(feccrni)97TiB2合金的延伸率最高，达到13.1%，是feccrni的3倍以上。(feccrni)82Ti6B12合金的抗拉强度最高，为646.5±0.1 MPa。强度的增强主要是固溶效应和Orowan过程的作用。

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Effect of Ti and B additions on the microstructure and properties of FeCoCrNi high entropy alloys prepared by hot pressing

ABSTRACT (FeCoCrNi)100-3xTixB2x (x = 0, 1, 2 and 6 at.-%) high entropy alloys (HEAs) were fabricated by hot pressing. The effects of Ti and B content on the microstructure and mechanical properties were investigated using X-ray electron diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). The results show that the FeCoCrNi high-entropy alloy form single FCC phase. With the increase of Ti and B content, dual FCC phases appeared in the alloys. Additionally, the per cent elongation of alloys first increased and then declined, while the ultimate tensile strength kept moving up. The (FeCoCrNi)97TiB2 alloy has the highest per cent elongation of 13.1%, which is more than three times that of the FeCoCrNi. the (FeCoCrNi)82Ti6B12 alloy shows the highest ultimate tensile strength, which is 646.5 ± 0.1 MPa. The enhanced strength is attributed to solid solution effect and Orowan process.

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来源期刊

Powder Metallurgy 工程技术-冶金工程

CiteScore

2.90

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Powder Metallurgy is an international journal publishing peer-reviewed original research on the science and practice of powder metallurgy and particulate technology. Coverage includes metallic particulate materials, PM tool materials, hard materials, composites, and novel powder based materials.