含磷高强IF钢的析出物与深冲性能  

Precipitates and deep-drawability of containing phosphorus high strength IF steel

作　　者：郭卫民[1] 孙德朋[2] 张华阳[3] 丁宁[1] 时军波[1] 赵宝玲[1] 

机构地区：[1]山东省科学院山东省分析测试中心山东省材料失效与安全评估工程技术中心,山东济南250014 [2]济钢集团有限公司,山东济南250101 [3]山东大学材料液固结构演变与加工教育部重点实验室,山东济南250061

出　　处：《金属热处理》2015年第2期99-103,共5页Heat Treatment of Metals

基　　金：山东省自然科学基金三院联合基金(ZR2014YL003)

摘　　要：通过实验室冶炼含磷高强IF钢,并经锻造、热轧、卷取、冷轧和连续退火,利用扫描电镜和XRD等设备观察其内部的二相粒子和织构特征,研究了轧制工艺参数和退火工艺对含磷高强IF钢最终深冲性能的影响。结果表明,奥氏体区终轧条件下,降低终轧温度和和提高卷曲温度能够提高r值。在本次试验条件下,终轧温度930℃、卷取温度740℃,试验钢能够获得较好的成形性能,经冷轧并连续退火后,能够达到含磷高强IF钢的目标要求。Containing phosphorus high strength IF was smelt in laboratory, followed by forging, hot rolling, coiling, cold rolling and continuous annealing. Precipitates and textures were observed by using SEM and XRD, and effects of rolling parameters and annealing process on deep-drawability of the containing phosphorus high strength IF steel were investigated. The results show that when finish rolled in austenite region, r value of the IF steel is raised by decreasing finish rolling temperature or increasing coiling temperature. The IF steel can obtain preferable formability under finish roiling temperature 930 ℃ and coiling temperature 740 ℃, and after cold roiling and continuous annealing, it can meet the technical requirements of containing phosphorus high strength IF steel.

关 键 词：含磷高强IF钢 析出物 织构 深冲性能 r值 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335.5[金属学及工艺—金属材料]