选择性激光熔化制备CoCrFeMnNi高熵合金的组织与性能演变

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2023-08-10 DOI:10.1515/ijmr-2022-0139

Zhenhui Wang, P. Ji, G. Wang, Yandong Jia, H. Wang, X. An

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引用次数: 0

摘要

摘要采用单因素变量法，采用选择性激光熔化法制备了CoCrFeMnNi高熵合金。详细研究了工艺参数对合金组织和力学性能的影响。结果表明:合金保持单相fcc组织，组织各向异性，晶粒内部存在高密度的位错堆积和缠结;塑性对孔隙率有显著影响，而孔隙率又取决于工艺参数。特别是随着舱口间距的变化，断裂伸长率的差异最大可达20.9 %。

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Evolution of microstructure and properties of CoCrFeMnNi high entropy alloy fabricated by selective laser melting

Abstract CoCrFeMnNi high entropy alloy was prepared by selective laser melting as a function of processing parameters by adopting the single factor variable method. The influence of process parameters on the microstructure and mechanical properties was investigated in detail. The results show that the alloy maintained a single-phase fcc structure, the microstructure is anisotropic and shows the presence of a high density of dislocations accumulated and entangled inside the grains. The ductility has a significant influence on the level of porosity, which in turn depends on the process parameters. Especially with the variation of hatch spacing, the elongation at break differs by at most 20.9 %.

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来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.