Simulation of the Effects of Different Hot Stamping Temperatures on the Mechanical Properties and Microstructure of Low-carbon Automobile Axle Housing Steel
Simulation of the Effects of Different Hot Stamping Temperatures on the Mechanical Properties and Microstructure of Low-carbon Automobile Axle Housing Steel
Samples are taken from the same positions of 14 mm thick low carbon automobile axle housing steel plate,heated to various hot stamping temperatures of 650 ℃,750 ℃,850 ℃ respectively,held for 3 min and air cooled.The microstructure and mechanical properties of the samples are compared with those of the unheated hot rolled steel plate,the effects of different hot stamping temperatures on microstructure and mechanical properties are analyzed.The results show that the mechanical properties and microstructure of the test steel are basically unchanged at 650 ℃,the mechanical properties are basically unchanged with the second phase in the microstructure reduced and the precipi-tates on the ferrite grains increased at 750 ℃,while the yield strength and tensile strength are reduced by 90 MPa ap-proximately with the elongation ratio increased by 5％,grain size increased,the ferrite showing the tendency of equiaxed morphology and carbide precipitates apparently decreased at 850 ℃.
关键词
热冲压温度/组织/力学性能/等轴状
Key words
Hot stamping temperature/Microstructure/Mechanical properties/Equiaxed
维普
万方数据