Impact deformation and work hardening of high manganese steels containing NbC particles

Abstract

Research has been undertaken on the microstructure, mechanical properties, and impact abrasion resistance of high manganese steels containing primary or eutectic NbC particles. The present paper presents and analyses test results on the impact deformation resistance (determined using a drop weight device) and work hardening ability of these steels. The microstructure, impact toughness, and impact abrasion resistance will be the subject of later papers. The presence of NbC particles in high manganese steel enhances its work hardening ability by reducing plastic deformation, but does not enhance the total hardness increase under identical impact conditions. The experimental results were in very good agreement with the theoretical analysis using the derived equations from the fundamental power law between the true compressive stress and true strain, and the relationship between yield strength and hardness.MST/1971