The present study involved the casting and hot-rolling of steel with a chemical composition of Fe-0.25C-0.33Si-1.05Mn-4.56Al. Subsequently, heat treatment was applied at various temperatures and durations to achieve the necessary material characteristics. Initially, all of the specimens underwent austenitization at a temperature of 820 ℃, which is the annealing temperature corresponding to the midpoint of the critical range. This process lasted for a duration of 600 seconds. Subsequently, the specimens were subjected to quenching in oil at a temperature of 150 ℃, and this temperature was maintained for a period of 20 seconds. Finally, the specimens were immersed in a salt bath. The mixture, composed of equal parts NaNO3 and KNO3, was subjected to transfer and partitioning processes at temperatures of 330 and 450 ℃, and for durations of 1000 and 1800 seconds. Subsequently, the mixture was rapidly cooled by immersion in water. The microstructural composition of steel after to heat treatment encompasses the presence of δ-ferrite, α-ferrite, retained austenite, and a minor quantity of martensite. The volume fraction of the surviving austenite is shown to grow as the temperature and partitioning time are elevated. This can be attributed to the heightened driving force and increased likelihood of carbon diffusion. The sample that underwent partitioning at a temperature of 450 ℃ for a duration of 1800 seconds yielded the optimal combination of strength and elongation, resulting in a product value of 41600MPa%. The provided specimen exhibits a tensile strength of 1300 MPa and experiences a 32% elongation.