Abstract:
1300WB low-alloy steel powder was compression formed by a route limitation method and then was sintered to a low-alloy steel at different temperatures. The effects of sintering temperature on the microstructure, micromorphology, density, compressive strength and hardness were studied. The results show that with the increase of sintering temperature, the pore quantity in the sample decreased and the size was reduced; the connected pores became independent; the pore shape changed from irregular to spherical. The microstructure of the low-temperature sintered sample was composed of pearlite, ferrite and cementite. With the increase of sintering temperature, the amount of pearlite increased and the microstructure became uniform.The density, compressive strength and hardness of samples also increased with increasing sintering temperature.