合金化温度对高强IF钢GA板镀层组织及性能的影响Effect of galvannealing temperature on microstructure and properties of coating on galvannealed high strength IF steel
王川,康永林,滕华湘
摘要(Abstract):
采用小脚掠射X射线衍射法、辉光放电光谱法、扫描电镜、60°弯曲试验及Tafel极化曲线测试法研究了不同合金化温度对工业生产条件下高强IF钢合金化热镀锌(GA)板镀层组织和性能的影响。结果表明,随合金化温度升高,镀层中Fe含量增加,Γ相层厚度增加,抗粉化性能降低,而耐腐蚀性能提高;合金化温度在500℃时,镀层表面以粒状δ相为主,同时还有部分柱状ζ相;合金化温度在550℃和570℃时,镀层表面由致密的粒状δ相组成;表面致密的δ相及Γ相层厚度的增加有利于镀层的耐腐蚀性能。
关键词(KeyWords): 合金化热镀锌;高强IF钢;微观组织结构;抗粉化性;耐腐蚀性
基金项目(Foundation): 国家高技术研究发展计划(863计划)(2013AA031601)
作者(Author): 王川,康永林,滕华湘
DOI: 10.13289/j.issn.1009-6264.2014.09.016
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