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Effect of direct and reheated quenching on microstructure and mechanical properties of CLAM steels |
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| Authors: | J Qiu Y Xin YL Wang D Tang |
| Affiliation: | a Department of Physics, University of Science and Technology Beijing, Beijing 100083, China b State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China c National/Engineer Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
| Abstract: | Direct and reheated quenching on microstructural mechanical properties of China Low Activation Martensitic (CLAM) steel was investigated. Three direct quenching and tempering (DQ&T) CLAM steels were rolled at the same finish rolling temperature with different quenching rate, and their microstructures and mechanical properties were compared with those of a reheated quenching and tempering (RQ&T) CLAM steel. DQ&T process was proven to strengthen the tensile property but lower the toughness compared to RQ&T process due to the finer austenite grain size formed under RQ&T process. Tensile property first increased with quenching rate and then decreased. The reason for this was discussed. |
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