Analysis of microstructure and mechanical properties of different boron and non-boron alloyed steels after being hot stamped

摘要: Abstract Hot stamping is a non-isothermal high temperature forming process, in which complex ultra strength parts are produced, with the goal of no springback. Boron alloyed steels, especially 22MnB5, have been point focus for materials choice hot stamping. In this paper four non-boron steels as well five boron were stamped using water and nitrogen cooling media. Microstructural analyses tensile tests samples performed. obtained fully martensitic or bainitic microstructure while was consisted some ferrite phase addition to martensite bainite phases. The results showed that attained yield values about 650-1370 MPa 850-2000 MPa, respectively, those related were, order, 600-1100 MPa 900-1400 MPa. © 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility ICM11