Zejiao Liu, C. Jing, T. Lin, Junjie Xu, Chu Yang, Ning Li, Jingrui Zhao
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引用次数: 0
Abstract
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-%.
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.
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