Bimodal Grain Size Distribution Enhances Strength and Ductility Simultaneously in a Low-Carbon Low-Alloy Steel

Péter J. Szabó; David P. Field; Bertalan Jóni; Jelena Horky; Tamás Ungár

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Bimodal Grain Size Distribution Enhances Strength and Ductility Simultaneously in a Low-Carbon Low-Alloy Steel

机译：双峰晶粒尺寸分布可同时提高低碳低合金钢的强度和延展性

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Low-carbon low-alloy steel specimens were quenched, then cold rolled, and finally annealed. Electron backscatter diffraction (EBSD) micrographs revealed a bimodal grain structure where ultra-fine grain structures with low-angle grain boundaries are alternating with regions of larger grains. The average total dislocation density was measured by X-ray line profile analysis, whereas the geometrically necessary dislocation density was obtained from the analysis of EBSD data. Using the combination of the Hall–Petch and Taylor equations, a good correlation was found between the total dislocation density and the measured flow stress in the different states of the alloy. The difference in evolutions of the total and the geometrically necessary component of the dislocation densities is discussed in terms of the successive processes of quenching, rolling, and annealing of the alloy.

机译：将低碳低合金钢样品淬火，然后冷轧，最后退火。电子背散射衍射（EBSD）显微照片揭示了一种双峰晶粒结构，其中具有低角度晶界的超细晶粒结构与较大晶粒的区域交替出现。平均总位错密度是通过X射线线轮廓分析测量的，而几何上必需的位错密度是通过EBSD数据分析获得的。使用Hall-Petch和Taylor方程的组合，在合金的不同状态下总位错密度与实测流动应力之间发现了良好的相关性。根据合金的淬火，轧制和退火的连续过程，讨论了位错密度的总变化和几何上必要的组成的演变差异。

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来源
《Metallurgical and Materials Transactions A》 |2015年第5期|1948-1957|共10页
作者
Péter J. Szabó; David P. Field; Bertalan Jóni; Jelena Horky; Tamás Ungár;
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作者单位

Department of Materials Science and Engineering Budapest University of Technology and Economics">(1);

School of Mechanical and Materials Engineering College of Engineering and Architecture Washington State University">(2);

Department of Materials Physics Eötvös University Budapest">(3);

Physics of Nanostructured Materials Faculty of Physics University of Vienna">(4);

Department of Materials Physics Eötvös University Budapest">(3);

Department of Physics and Materials Science City University of Hong Kong">(5);

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1. Bimodal Grain Size Distribution Enhances Strength and Ductility Simultaneously in a Low-Carbon Low-Alloy Steel [J] . Szabo Peter J., Field David P., Joni Bertalan, Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2015,第5期

机译：双峰晶粒尺寸分布可同时提高低碳低合金钢的强度和延展性
2. Identification of the effective grain size responsible for the ductile to brittle transition temperature for steel with an ultrafine grain size ferrite/cementite microstructure with a bimodal ferrite grain size distribution; [J] . Ming-Chun Zhao, Tian-Yi Zeng, Jing-Li Li, Materials Science and Engineering . 2011,第12期

机译：确定具有双峰铁素体晶粒尺寸分布的超细晶粒铁素体/渗碳体组织的钢的韧性至脆性转变温度的有效晶粒度；
3. Model of Enhanced Strength and Ductility of Metal/Graphene Composites with Bimodal Grain Size Distribution [J] . Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2020,第1期

机译：具有双峰粒度分布的金属/石墨烯复合材料的增强强度和延展性模型
4. Elaboration of austenitic stainless steel samples with bimodal grain size distributions and investigation of their mechanical behavior [C] . B. Flipon, L. Garcia de la Cruz, E. Hug, International ESAFORM Conference on Material Forming . 2017

机译：具有双峰粒度分布的奥氏体不锈钢样品和对其力学行为的调查
5. The Interplay between Grain Size and Austenite Stability on Deformation Behavior of High Strength-High Ductility Combination Nanostructured Stainless Steel. [D] . Challa, Venkata Sai Ananth. 2017

机译：晶粒尺寸和奥氏体稳定性对高强度-高延性组合纳米结构不锈钢变形行为的影响。
6. Datasets acquired with correlative microscopy method for delineation of prior austenite grain boundaries and characterization of prior austenite grain size in a low-alloy high-performance steel [O] . V. Sinha, M. Gonzales, E.J. Payton 2019

机译：用相关显微镜方法获得的数据集用于描绘低合金高性能钢中的奥氏体晶界和表征奥氏体晶粒度
7. Relationship between the Effective Grain Size of Brittle Crack Propagation and Microstructural Size in Low-carbon Low-alloy Bainitic Steels [O] . Shigekazu Morito, Taisuke Hayashi, Anh Hoang PHAM, 2016

机译：低碳低合金贝氏体钢的脆性裂纹繁殖与微观结构尺寸的有效粒度与微观结构尺寸的关系

Bimodal Grain Size Distribution Enhances Strength and Ductility Simultaneously in a Low-Carbon Low-Alloy Steel

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