MODELING THE EFFECT OF RADIUS ON TEMPERATURE HISTORY OF TRANSIENT QUENCHED BORON STEEL

Abstract

One-dimensional (1D) model of an axisymmetric unsteady state industrial quenched boron steel 50B46H bar based on finite element method (FEM) has been applied to investigate the influence of process history on its material properties. The effect of four different radii on its temperature history is determined. The model can be employed as a guideline to design cooling approach to achieve desired microstructure and mechanical properties such as hardness. A computer program
of the model is developed, which can be used independently or incorporated into a temperature history software named (LHP)-software to continuously calculate and display temperature history of the boron steel bar and thereby to study the effect of radius on temperature history. The developed program based on (1D) FEM model has been verified by comparing its results with commercial finite element software results. The comparison indicates its validity and reliability.