热成形工艺对合金化锌基镀层微裂纹的影响研究  

Analysis of Zinc-coating Micro-cracks after Hot Stamping

作　　者：冯冠文[1] 毕云杰 王伟波 毕玉梅 辛卫升 

机构地区：[1]武钢研究院,湖北武汉430080 [2]武钢股份冷轧总厂,湖北武汉430083

出　　处：《武汉工程职业技术学院学报》2016年第3期13-15,19,共4页Journal of Wuhan Engineering Institute

摘　　要：热成形钢锌基镀层可以有效的防止热冲压过程中零件的表面氧化,并在后续使用过程中提供良好的抗腐蚀性能。然而由于锌基镀层熔点低,在热冲压时会导致表面微裂纹的产生,影响零件的机械性能。研究了热冲压成形参数包括奥氏体化条件,热冲压合模温度和变形量等对合金化镀层热成形钢表面微裂纹的影响,并根据微裂纹的形成机理,优化了合金化锌基镀层热成形钢的工艺窗口。Coating can act as oxidation protection for hot forming steel during stamping process. But the coating cracks in the stamping process are the major problem for usage . This paper focused on the effect of hot stamping parameters, such as austenization conditions, stamping temperature and deformation strain, on the phase evolution of the coating, and on the formation of micro-cracks. The optimum hot stamping conditions have been proposed.

关 键 词：锌基镀层 热成形钢 微裂纹 

分 类 号：TG174.445[金属学及工艺—金属表面处理]