Effect of Carbon Content on Annealing Texture, Plastic Anisotropy, and Mechanical Properties of 0.07% Phosphorus Sheet Steels

The effects of carbon content on the crystallographic texture, plastic anisotropy, and mechanical properties of cold-rolled and annealed sheets of 0.07 percent phosphorus steels have been studied. Both vacuumand air-melted laboratory heats were used. Results show that although the strength of the sheet increased with increasing carbon content, ther mvalue decreased. The detrimental effect of carbon onr mvalue was more pronounced after annealing at an intercritical temperature of 780°C (1435℉) than at a subcritical temperature of 710°C (1310℉). These and other observations, including variations in texture, anisotropy, strength, work hardening, and grain size, are discussed.