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Effect of hot stamping parameters on the mechanical properties and microstructure of cold-rolled 22MnB5 steel strips
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Effect of hot stamping parameters on the mechanical properties and microstructure of cold-rolled 22MnB5 steel strips
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Journal Article
Effect of hot stamping parameters on the mechanical properties and microstructure of cold-rolled 22MnB5 steel strips
2014
Overview
Thermomechanical experiments were carried out to reproduce the hot stamping process and to investigate the effects of process parameters on the microstructure and mechanical properties of stamped parts. The process parameters, such as austenitizing temperature, soaking time, initial deformation temperature and cooling rate, are studied. The resulting microstructures of specimens were observed and analyzed. To evaluate the mechanical properties of specimens, tensile and hardness tests were also performed at room temperature. The op-timum parameters to achieve the highest tensile strength and the desired microstructure were acquired by comparing and analyzing the results. It is indicated that hot deformation changes the transformation characteristics of 22MnB5 steel. Austenite deformation promotes the austen-ite-to-ferrite transformation and elevates the critical cooling rate to induce a fully martensitic transformation.
Publisher
University of Science and Technology Beijing,Springer Nature B.V,School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
