Strength Evolution of TixZrVNb Alloys Analyzed by Three Strengthening Models

IF 3.3 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Hui Wang, Rui Huang, Xin Li, Sijia Li, Linhui Liu
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Abstract

This study focuses on four types of TixZrVNb (x = 1, 2, 3, 4) high-entropy alloys. After solution treatment, the alloys are subjected to room-temperature tensile testing. Characterization methods such as optical microscopy, scanning electron microscopy, electron backscattering diffraction, and transmission electron microscopy are used to analyze the microstructure of solution treatment. The results indicate that the microstructures of all four alloys are composed of grains with a single BCC structure. The room-temperature tensile test results indicate that as x increases, the yield strength of the alloy gradually decreases, while the plasticity gradually increases. On the basis of this experiment and to find an acceptable strengthening model, three solid solution strengthening models are introduced in this article, which are used to calculate the yield strength of solid solution alloys. The tensile yield strength of alloys is compared with the calculated values, and the differences between the three models and the error between the calculated results and experimental results are discussed. The results show that all three models can predict the yield strength of alloys well with an error of less than 8%; compared to other models, these models have smaller computational errors, among which the Varvenne model has a relatively small error.

Abstract Image

三种强化模型分析TixZrVNb合金的强度演变
本文主要研究了四种类型的TixZrVNb (x = 1,2,3,4)高熵合金。固溶处理后,合金进行室温拉伸试验。采用光学显微镜、扫描电镜、电子后向散射衍射、透射电镜等表征方法分析固溶处理的微观结构。结果表明,四种合金的显微组织均由单一BCC组织的晶粒组成。室温拉伸试验结果表明,随着x的增大,合金的屈服强度逐渐降低,塑性逐渐增大。在此实验的基础上,为了找到一个可接受的强化模型,本文介绍了三种固溶体强化模型,用于计算固溶体合金的屈服强度。将合金的抗拉屈服强度与计算值进行了比较,讨论了三种模型之间的差异以及计算结果与实验结果的误差。结果表明,三种模型均能较好地预测合金的屈服强度,误差小于8%;与其他模型相比,这些模型的计算误差较小,其中Varvenne模型的误差相对较小。
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
Advanced Engineering Materials
Advanced Engineering Materials 工程技术-材料科学:综合
CiteScore
5.70
自引率
5.60%
发文量
544
审稿时长
1.7 months
期刊介绍: Advanced Engineering Materials is the membership journal of three leading European Materials Societies - German Materials Society/DGM, - French Materials Society/SF2M, - Swiss Materials Federation/SVMT.
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