چكيده به لاتين
Plain carbon steels are one of the most important groups of engineering alloys due to their excellent mechanical properties, including high strength and toughness, and are widely used in the industry. Many of the products are made of these types of steel, including all types of sheets, belts, rods, and the like. In the processes of forming these steels, like other metals, process parameters such as temperature and strain rate will have a huge impact on the mechanical properties of the finished product. Therefore, achieving the desired temperature and rate of strain has always been one of the main challenges in all manufacturing processes. Therefore, the purpose of this study was to determine the optimum conditions for hot deformation of AISI1045 carbon steel using process maps. For this purpose, the hot pressure test was carried out at a temperature of 900-1100 °C and a strain rate of 0.001-1 s^(-1) on this steel. The process drawings are prepared for this steel by drawing the flow curves and determining the required coherence. After examining the process maps and microstructures obtained from the hot pressure test, it is determined that the most suitable temperature range for hot deformation is for this steel at temperatures of 1050 °C and 1100 °C and the strain rate is 0.001 s^(-1). In these areas, the efficiency of the maximum and instability does not occur. Also, at a temperature of 950 °C and a strain rate of 1 s^(-1), there was a lack of instability, which indicates the proper conditions for deformation.
