Effect of Particle Size Distribution on Austenite Grain Growth in Fe-0.05mass%C Alloy Deoxidized with Mn-Si, Ti, Mg, Zr and Ce
The austenite grain growth in an Fe–0.05mass%C alloy deoxidized with Mn–Si, Ti, Mg, Zr and Ce has been studied as a function of holding time at 1200°C and inclusion characteristics such as particle diameter, <i>d</i><sub>V</sub>, number and surface area, <i>A</i><sub>V</sub><sup>P</sup>, of particles per unit volume and volume fraction of particles. The mean limiting diameters of grains obtained by the Zener, Doherty <i>et al.</i> and Nishizawa <i>et al.</i> relations are compared with those observed experimentally and calculated by the relationship between surface area of particles, <i>A</i><sub>V</sub><sup>P</sup>, and grains, <i>A</i><sub>V</sub><sup>G</sup>, per unit volume. The contribution of small size particles with <i>d</i><sub>V</sub><0.5 µm to limiting grain size is estimated for the particles with uniform size, log-normal size distribution and observed size distribution.
- ISIJ international
ISIJ international 46(5), 718-727, 2006-05-15
The Iron and Steel Institute of Japan