高强钢B1500HS热成形后的显微组织和力学性能研究  

Microstructure and Mechanical Properties of High Strength Steel B1500HS After Hot Forming

作　　者：陈秀丽[1] 吕利栋[1] 贾慧慧[1] 李胡勇[2] 

机构地区：[1]河北建筑工程学院,河北张家口075000 [2]黄淮学院机械工程学院,河南驻马店463000

出　　处：《铸造技术》2017年第7期1567-1569,共3页Foundry Technology

摘　　要：研究了热成形后海面建筑高强钢B1500HS在热成形后的组织和力学性能。结果表明,奥氏体化加热温度910℃,保温5 min,初始成形温度800℃以上,冷却速度50℃/s条件下,B1500HS钢组织为细小均匀的板条状马氏体,晶粒细化和位错密度大,抗拉强度达到了1 625 MPa,显微硬度在50 HRC以上,抗冲击性能显著提升,力学性能完全满足海面建筑平台需求。The microstructure and mechanical properties of high strength steel B1500HS after hot forming were studied. The results show that, under the condition of the austenitizing at 910℃ for 5 rain, the initial forming temperature at over 800 ~C and the cooling rate of 50℃/s, B1500HS steel consists of fine lath martensite microstructure, grain refines and has high dislocation density, tensile strength reaches 1 625 MPa, the micro hardness is above 50 HRC, anti impact performance significantly improves, mechanical properties can satisfy the demand of building sea platform.

关 键 词：B1500HS 热成形 显微组织 力学性能 海面建筑 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG306[金属学及工艺—金属材料]