合金化工艺对DP590合金化镀层组织和性能的影响

来源 :第十届中国钢铁年会暨第六届宝钢学术年会 | 被引量 : 0次 | 上传用户:laoxuslx
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为研究热镀锌合金化工艺参数对DP590双相钢合金化行为的影响,采用SEM、粗糙度仪分析了不同工艺条件下合金化镀层的表面形貌、镀层结构和表面粗糙度.结果表明,随着合金化温度升高和时间延长,合金化镀层表面ζ相减少,δ相增多,出现小孔;480℃时DP590钢板镀层表面粗糙度随处理时间的延长而增加,500℃和520℃处理时镀层表面粗糙度时随时间延长而减小;当合金化时间为25s时,镀层表面粗糙度随温度升高而降低,而20s时,随合金化温度升高,表面粗糙度呈先升高后降低趋势;温度升高,时间增加,合金化程度加深,当合金化温度为520℃,合金化时间为25s时,DP590钢板热镀锌合金化镀层中出现Γ相,耐粉化性能变差.
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