Strengthening Effect of Fe60Mn16Ni12Cr12 Medium-Entropy Alloys via Co-Doping Al / C

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2024-12-13 DOI:10.1007/s12540-024-01865-9

Seong-June Youn, Young-Kyun Kim, Jae Bok Seol, Duk-Hyun Chung, Young-Sang Na

引用次数: 0

Abstract

The strengthening effect of combined addition of substitutional and interstitial elements on the mechanical properties of medium-entropy alloys (MEAs) have rarely been explored. Hence, we analyzed the effects of co-doping Al and C on the mechanical properties of Fe₆₀Mn₁₆Ni₁₂Cr₁₂ MEA. The addition of 0.6 at% C and 1.0 at% Al to the MEA substantially increased the strength from 227 to 425 MPa without compromising the plasticity. Quantitative analyses demonstrated that the increase in strength originates from multiple mechanisms, including hetero-deformation-induced strengthening by the heterogeneous grain size structure.

Graphical Abstract

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Al / C共掺杂对Fe60Mn16Ni12Cr12中熵合金的强化效应

取代元素和间隙元素联合添加对中熵合金力学性能的强化作用研究较少。因此，我们分析了Al和C共掺杂对Fe60Mn16Ni12Cr12 MEA力学性能的影响。在MEA中添加0.6 at% C和1.0 at% Al，在不影响塑性的情况下，强度从227 MPa大幅提高到425 MPa。定量分析表明，强度的提高是由多种机制引起的，其中包括由非均匀晶粒尺寸组织引起的异质变形强化。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.