Al17Cr10Fe33Ni36Mo2Ti2 共晶高熵合金吨级铸锭中的显微组织选择

IF 2.9 2区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Xinbo Shi, Yunji Qiu, Xiaoyu Bai, Yiming Chen, Yongqiang Wang, Tao Xu, Jincheng Wang, Junjie Li, Zhijun Wang
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引用次数: 0

摘要

共晶高熵合金已引起广泛关注,并被认为是最有前途的新型金属材料之一。大型共晶高熵合金铸锭的微观结构具有优异的铸造性能,但目前还鲜有报道。在本研究中,我们首次通过真空感应熔炼制备了吨级共晶高熵合金铸锭。研究还揭示了铸锭从边缘区域到核心区域的微观结构演变和宏观偏析。研究发现,吨级共晶高熵合金铸锭没有明显的宏观偏析,化学元素分布均匀。原生相与共晶菌落的耦合生长在钢锭中均匀分布,从钢锭边缘区域到核心区域没有传统的柱状晶粒区域。伸长率大于 10%的吨级钢锭 R/2 区试样的抗拉强度为 892.3 MPa,显示出优异的综合力学性能。该研究对大型共晶高熵合金铸锭的工业应用具有重要指导意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Microstructure Selection in Ton Class Ingot of Al17Cr10Fe33Ni36Mo2Ti2 Eutectic High Entropy Alloy

Microstructure Selection in Ton Class Ingot of Al17Cr10Fe33Ni36Mo2Ti2 Eutectic High Entropy Alloy

The eutectic high entropy alloys have attracted extensive attention and are considered one of the most promising new metal materials. The microstructures of large eutectic high entropy alloy ingot with excellent casting performance have been rarely reported. In this study, we have prepared a ton class eutectic high entropy alloy ingot via vacuum induction melting for the first time. The evolution of microstructure and macro-segregation from the edge region to the core of the ingot were also revealed. It was found that there was no significant macro-segregation in ton class eutectic high entropy alloy ingot, and chemical elements were distributed uniformly. The coupled growth of the primary phases and eutectic colonies were homogeneously distributed in the ingot, and there is no traditional columnar grain region from the edge region of the ingot to the core. The tensile strength of the sample in the R/2 region of the ton class ingot with elongation greater than 10% is 892.3 MPa, showing an excellent comprehensive mechanical property. This study exhibits an important guidance for the industrial application of large eutectic high entropy alloy casting ingot.

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来源期刊
Acta Metallurgica Sinica-English Letters
Acta Metallurgica Sinica-English Letters METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
6.60
自引率
14.30%
发文量
122
审稿时长
2 months
期刊介绍: This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.
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