IF钢合金化镀锌板镀层相结构研究  

Research on Phase Microstructure and Powdering-resistance of Hot-dip Galvannealed Steel Sheets

作　　者：周元贵 白会平 

机构地区：[1]武汉钢铁有限公司技术中心检测所,湖北武汉430080

出　　处：《武汉工程职业技术学院学报》2017年第3期5-8,共4页Journal of Wuhan Engineering Institute

摘　　要：采用扫描电镜(SEM)、聚焦离子束(FIB)、透射电镜(TEM)及弯曲试验研究了工业大生产条件下两种加热炉功率生产的IF钢合金化镀锌板(GA)镀层微观组织和相结构。结果表明两种GA板镀层表面均由致密的δ相和柱状ζ相组成;当合金化炉的功率由464kW提高到672kW时,镀层表面δ相含量由1.14%提高到19.44%,镀层厚度保持不变;GA板镀层均由Г相、δ相和ζ相组成,靠近基板区域主要为Г相,镀层中心区域主要为δ相,镀层近表面主要为ζ相。The microstructure,phase morphology and powdering performance of two kinds of industrially produced hot-dip galvannealed（GA）coatings on interstitial free（IF）steels were investigated by means of SEM,FIB,TEM and 180 degree bending test.The results show that,the content ofδphase is increasing from 1.14%to 19.44%as the power of furnace is enhanced from 464 kW to 672 kW and the thickness is not change.There areГphase、δphase andζphase in both two GA coatings.Гphase mainly exists in the area near the matrix,δphase mainly exists in the center of the coating,andζphase mainly exists near the surface.

关 键 词：合金化镀锌板 聚焦离子束 相结构 IF钢 

分 类 号：TG142.15[一般工业技术—材料科学与工程]