Analysis of Microstructure and Properties of High Strength Steel for Vehicle Axle

The vehicle axle is the main bearing part of the vehicle transmission, which needs to carry large power and torque. The axle is processed with high-strength steel. In order to verify the material properties of the axle and confirm whether it meets the design requirements, the chemical composition, mechanical properties, microstructure and metal inclusions of the axle are analyzed. The results show that the chemical composition of the material used in the axle meets the standard requirements, the parts with high hardness and tensile strength are tempered martensite, and the metal inclusions are mainly alumina inclusions, silicate inclusions and tin inclusions. Through the analysis of the performance of the axle, it is concluded that the axle material can meet the design requirements.