A Transmission Electron Microscopy Study of Plate Martensite Formation in High-carbon Low Alloy Steels
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2013年第4期
论文作者：Albin Stormvinter Peter Hedstrm Annika Borgenstam
文章页码：373 - 379
摘 要：<正>The martensitic microstructures in two high-carbon low alloy steels have been investigated by classical and automated crystallographic analysis under a transmission electron microscope.It is found that the martensitic substructure changes from consisting mostly of transformation twins for 1.20 mass%carbon（C） steel to both transformation twins and planar defects on {101}M for 1.67 mass%C steel.In the 1.67 mass%C steel it is further found that small martensite units have a rather homogeneous substructure,while large martensite units are more inhomogeneous.In addition,the martensite units in both steels are frequently found to be of zigzag patterns and have distinct crystallographic relationships with neighboring martensite units,e.g.kink or wedge couplings.Based on the present findings the development of martensite in high-carbon low alloy steels is discussed and a schematic of the martensite formation is presented.Moreover,whether the schematic view can be applied to plate martensite formation in general,is discussed.
Albin Stormvinter，Peter Hedstrm，Annika Borgenstam
Department of Materials Science and Engineering,School of Industrial Engineering and Management,KTH Royal Institute of Technology,SE-100 44 Stockholm,Sweden
摘 要：<正>The martensitic microstructures in two high-carbon low alloy steels have been investigated by classical and automated crystallographic analysis under a transmission electron microscope.It is found that the martensitic substructure changes from consisting mostly of transformation twins for 1.20 mass%carbon（C） steel to both transformation twins and planar defects on {101}M for 1.67 mass%C steel.In the 1.67 mass%C steel it is further found that small martensite units have a rather homogeneous substructure,while large martensite units are more inhomogeneous.In addition,the martensite units in both steels are frequently found to be of zigzag patterns and have distinct crystallographic relationships with neighboring martensite units,e.g.kink or wedge couplings.Based on the present findings the development of martensite in high-carbon low alloy steels is discussed and a schematic of the martensite formation is presented.Moreover,whether the schematic view can be applied to plate martensite formation in general,is discussed.
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