Fracture toughness of China low activation martensitic (CLAM) steel at room temperature |
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| Affiliation: | 1. University of Science and Technology of China, Hefei, Anhui 230027, China;2. Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China;1. Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China;2. Shanghai Institute of Laser Plasma, Shanghai 201800, China;1. School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China;2. School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China;1. Escola de Engenharia de Lorena, University of Sao Paulo, Brazil;2. Karlsruher Institut für Technologie, KIT, Germany;3. Max-Planck Institut für Eisenforschung, MPIE, Germany |
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| Abstract: | The fracture toughness (JIC) of China low activation martensitic (CLAM) steel was tested at room temperature through the compact tension specimen, the result is 417.9 kJ/m2, which is similar to the JLF-1 at same experimental conditions. The microstructural observation of the fracture surface shows that the fracture mode is a typical ductile fracture. Meanwhile, the fracture toughness is also calculated on the basis of the fractal dimension and the calculated result is 454.6 kJ/m2, which is consistent well with the experimental result. This method could be used to estimate the fracture toughness of materials by analyzing of the fracture surface. |
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| Keywords: | CLAM steel Fracture toughness Compact tension Fractal dimension Vertical Section Method |
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