Abstract In this work, multipass torsion tests followed by coiling simulations under different conditions have been performed with a reference Nb (0.03 pct) and high Ti (0.1 pct)–Nb-microalloyed steel. the case of steel, estimated yield strengths close to or over 700 MPa were obtained for some researched. However, very significant effect previous austenite grain size strain accumulation on prec...

Microalloyed cast steels are a group of microalloyed steels in which reliable mechanical properties could be achieved by heat treatment. In this work, the heat treatment processes were carried out on the cast specimens as the step samples by different thicknesses and Zr content. The results show that after homogenization, variations in thickness have no effect on the hardness. Also, after hea...

The present paper is concerned to the theoretical and experimental study of the growth kinetics of allotriomorphic ferrite in medium carbon vanadium-titanium microalloyed steel. A theoretical model is presented in this work to calculate the evolution of austenite-to-allotriomorphic ferrite transformation with time at a very wide temperature range. At temperatures above eutectoid temperature, wh...