Development of high-formability high-strength galvannealed steel sheet of tensile strength 440 MPa grade with excellent formability |
| |
| Institution: | 1. Technical Research Laboratories, Kawasaki Steel Corporation, Kawasaki-dori 1, Mizushima, Kurashiki-shi, Okayama, 712 Japan;2. Mizushima Works, Kawasaki Steel Corporation, Kawasaki-dori 1, Mizushima, Kurashiki-shi, Okayama, 712 Japan;1. Department of Mechanical Engineering, Birla Institute of Technology and Science-Pilani, Hyderabad, India;2. Department of Mechanical Engineering, Gokaraju Rangaraju Institute of Engineering and Technology, Hyderabad, India;1. The State Key Laboratory of Rolling & Automation, Northeastern University, Shenyang 110819, China;2. Research Institute of Science and Technology, Northeastern University, Shenyang 110819, China;3. Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;4. School of Materials Scienceand Engineering, Northeastern University, Shenyang 110819, China;1. Key Laboratory of Efficient & Clean Energy Utilization, School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha 410114 China;2. Hunan Province 2011 Collaborative Innovation Center of Clean Energy and Smart Grid, Changsha 410114 China;3. Japan Electric Power Central Research Institute, Tokyo 240-0196 Japan;1. Exponent, 149 Commonwealth Dr., Menlo Park, CA 94025, USA;2. Honeywell Federal Manufacturing & Technologies, LLC, 14520 Botts Road, Kansas City, MO 64147, USA |
| |
| Abstract: | Molybdenum and carbon were chosen as strengthening alloy elements for the production of high strength steel sheet with high press formability and excellent galvannealing properties. The strengthening effect of molybdenum addition was 6 MPa/0.1%, while that of carbon addition was 8.5 MPa/10ppm. The decrease in formability, especially elongation due to molybdenum (0.2%/0.1%) and the r value due to carbon (almost 0/l0ppm), was small. Steel containing carbon of 50–100ppm exhibited the highest formability with coiling temperature at 600°C. By applying these results, the high strength galvannealed sheet steel of TS 440 MPa grade with elongation of 35% and an r value of 1.5 was newly developed. This steel also exhibited good galvannealing properties. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
