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Effect of Substructure on Toughness of Lath Martensite/Bainite Mixed Structure in Low-Carbon Steels |
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| Authors: | LUO Zhi-jun SHEN Jun-chang SU Hang DING Yue-hua YANG Cai-fu ZHU Xing |
| Affiliation: | 1. Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,650093,Yunnan,China;Central Iron and Steel Research Institute,Beijing,100081,China 2. Central Iron and Steel Research Institute,Beijing,100081,China 3. Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,650093,Yunnan,China |
| Abstract: | The quantitative analysis of substructure in the martensite/bainite mixed structure, which is obtained from low-carbon NiCrMoV steels under different cooling conditions, was made by means of optical microscope (OM), scanning electron microscope (SEM), electron backscatter diffraction (EBSD), and transmission electron microscope (TEM), in order to research the effect on toughness. The test results indicate that the toughness of the steel is enhanced with the decrease in the packet and block size under the co... |
| Keywords: | lath martensite/bainite mixed structure toughness EBSD crack extension |
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