论文部分内容阅读
对比研究了ZG26Si Mn Mo及ZG26Si Mn V经Q-P-T工艺以及直接碳分配处理后的显微组织和力学性能。结果表明:两种试验钢经Q-P-T处理后,组织为板条马氏体+少量残余奥氏体。抗拉强度达到1500 MPa左右,伸长率保持在5%~9%,常温下的冲击功11~20 J。经Q-P-T工艺处理的力学性能明显优于直接碳分配工艺,强度最大差距达到500 MPa。对比两种铸钢材料,ZG26Si Mn V在强度上有所降低,而塑性和韧性有所升高。通过合理的淬火保温时间和分配时间,有利于增加残余奥氏体的含量,从而进一步提高钢的塑性和韧性。
The microstructures and mechanical properties of ZG26SiMnMo and ZG26SiMn V after Q-P-T process and direct carbon distribution were compared. The results showed that the microstructure of the two kinds of test steels treated by Q-P-T was lath martensite + a small amount of retained austenite. Tensile strength of about 1500 MPa, elongation maintained at 5% to 9%, the impact energy at room temperature 11 ~ 20J. The mechanical properties of the Q-P-T process are obviously better than the direct carbon distribution process, the maximum strength difference of 500 MPa. Comparing the two castings, ZG26Si Mn V decreased in strength and increased ductility and toughness. Through a reasonable quenching holding time and distribution time is conducive to increasing the content of retained austenite, thereby further improving the plasticity and toughness of steel.