The effect of cold rolling regime on microstructure and mechanical properties of AISI 304L stainless steel |
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| Authors: | Ali Hedayati Abbas Najafizadeh Ahmad Kermanpur Farnoosh Forouzan |
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| Affiliation: | 1. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran;2. Center of Excellence for High Performance Materials, School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran;3. Advanced Metalforming and Thermomechanical Processing Laboratory, School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran;1. Institute of Physics of Materials ASCR, ?i?kova 22, 616 62 Brno, Czech Republic;2. Institute of Materials Science and Engineering, University of Kaiserslautern, P.O. Box 3049, 67653 Kaiserslautern, Germany;3. CEITEC IPM, Institute of Physics of Materials ASCR, ?i?kova 22, 616 62 Brno, Czech Republic;1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. Shanghai Baosteel Research Institute, Shanghai 200431, PR China;3. Institute of Materials, Shanghai University, Shanghai 200072, PR China |
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| Abstract: | In this paper, the effect of different thickness reductions by cold rolling on the microstructure and mechanical properties of AISI 304L austenitic stainless steel were investigated. The hot rolled steel strips were subjected to cold rolling at 0 °C from 10 to 90% thickness reduction. Microstructures, strain-induced martensitic transformation and mechanical properties of the cold-rolled specimens were characterized by X-ray diffraction, Feritscope measurements, optical metallography, hardness and tensile tests. The resulting transformation curve showed a sigmoidal shape with the saturation value of strain-induced martensite of approximately 100%. A good agreement was found between the experimental results and the Olsen–Cohen model. The results indicated that formation of strain-induced martensite clearly resulted in a significant strengthening of the steel. |
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