Influence of full annealing on microstructure and mechanical properties of AISI 1035 steel

Abstract

The influence of annealing parameters on microstructure and mechanical properties of AISI 1035 carbon steel is analysed in this work. The specimens were full annealed at different temperature ranging from 900 °C to 1020 °C, and further, the evolution of microstructure and mechanical properties in these annealed specimens were analysed. Microstructural analysis shows that the ferrite grains coarsen with annealing, and the grain size was found to significantly increase with annealing temperature. From the toughness tests, it was observed that impact energy of specimens annealed at 1020 °C was found to be twice that of the corresponding value at 900 °C. In addition, the angle of deformation of specimens before fracture was measured on the specimens after impact test. Results shows that specimen annealed at 1020 °C has higher plastic deformation, indicating the higher toughness of these samples compared to those annealed at lower temperatures. This indicates that the ductility of C35 steel increases with annealing temperature.