配分温度对中锰钢组织演变的影响

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2023-06-02 DOI:10.1080/03019233.2023.2216097

Zejiao Liu, C. Jing, T. Lin, Junjie Xu, Chu Yang, Ning Li, Jingrui Zhao

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引用次数: 0

摘要

研究了热轧中锰钢(0.11C, 4.95Mn, 1.6Si,0.34Crwt-%)的Q&P工艺，选择660℃退火，研究了中锰钢在不同分配温度下的组织演变机理，并采用SEM, EBSD, XRD和透射电镜对中锰钢进行了分析和观察。结果表明:分块温度影响马氏体和奥氏体的分布，马氏体的平行分布更粗、更长，使二者之间的奥氏体分布更稳定;在短棒状马氏体边界处残留的奥氏体受到较大的变形力，稳定性较差。分块温度为230℃时，试验钢的综合性能最佳，断裂后总伸长率为27.4%，抗拉强度与伸长率的积为34.8 GPa-%。

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Effect of partitioning temperature on the microstructure and evolution of medium manganese steel

ABSTRACT The Q&P process of hot-rolled medium manganese steel (0.11C, 4.95Mn, 1.6Si,0.34Crwt-%) was studied and annealing at 660°C was selected to investigate the mechanism of microstructure evolution of medium manganese steel at different partitioning temperatures, and SEM, EBSD, XRD and transmission electron microscopy were used to analyse and observe the medium manganese steel. The results show that the partitioning temperature affects the distribution of martensite and austenite, with the parallel distribution of martensite being thicker and longer, making the austenite distributed between them more stable; the retained austenite at the boundary of the short rod-like martensite is subjected to larger deformation forces and is less stable. The best overall performance of the test steel was achieved when the partitioning temperature was 230°C, with a total elongation after breaking of 27.4%, and the product of tensile strength and elongation was 34.8 GPa-%.

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

期刊介绍： Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.