22MnB5硼钢板热冲压成形组织及力学性能研究  

Microstructure and Mechanics Property of 22MnB5 Boron Sheet during Hot Stamping Process

作　　者：祝哮 王忠堂[1] 林涛[1] 卢金[1] 史丽坤 

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [2]沈阳黎明航空发动机(集团)有限责任公司,辽宁沈阳110043

出　　处：《沈阳理工大学学报》2015年第6期15-19,共5页Journal of Shenyang Ligong University

基　　金：国家自然科学基金资助项目(51034009)

摘　　要：对22MnB5硼钢板热冲压成形工艺进行实验研究,制定22MnB5硼钢板奥氏体化工艺制度,分析奥氏体化时间和保压时间对22MnB5硼钢板成形性能及力学性能的影响规律。结果表明,22MnB5硼钢板的奥氏体化时间为5min,保压时间为60s时,热冲压效果较好,冲压件的抗拉强度在1550 MPa,强塑积在15.6 GPa·%,加工件的金相组织为马氏体。22MnB5硼钢板合适的热冲压成形工艺制度为奥氏体化温度950℃,奥氏体化时间为5min,保压时间为60s。Hot stamping process for 22MnB5 Boron steel had been studied by experiment. Process of austenitized Boron steel had been developed. The effect law of austenitized time and dwell time on the properties of 22MnB5 Boron steel had been analyzed. The results show that when austenitizing time is 5min and pressure holding time is 60s, the workpiece of 22MnB5 Boron has a good effect of aging and the microstructure of workpiece is martens- ite ,and tensile strength is 1550 MPa, and the product of strength and ductility is 15.6 GPa. %. The experimental conditions of 22MnB5 Boron sheet during hot stamping process should be that austenifizing temperature 950~C , and austenitizing time 5rain and pressure keeping time 60s.

关 键 词：22MnB5硼钢板 热冲压 奥氏体化 

分 类 号：TG142[一般工业技术—材料科学与工程]