预合金化时间对热成形钢锌基镀层组织和成分的影响
发布时间：2019-06-04 19:22
【摘要】：利用扫描电子显微镜及附属EDS能谱仪研究了不同预合金化时间对热成形钢22MnB5锌基镀层组织形貌及成分分布的影响规律。结果表明,试样在加热之后,镀层表面氧化物主要为ZnO和Al_2O_3;在550℃预合金化时,随着时间的延长,基体中的铁逐渐向镀层中扩散,镀层组成由η相、ζ相、δ相和Γ相逐渐转变为只有Γ相;奥氏体化之后,镀层中的组织几乎全部为α-Fe(Zn),只在表面有极少的Г相;预合金化保温时间为30 min时,在900℃保温5 min奥氏体化后能得到质量较好的镀层。
[Abstract]:The effects of different pre-bonding time on the microstructure and composition distribution of hot-formed steel 22MnB5 zinc-based coating were studied by scanning electron microscope (SEM) and affiliated EDS energy dispersive spectroscopy (EDS). The results show that the main oxides on the surface of the coating are ZnO and Al_2O_3; after heating. When the alloy is prealloyed at 550 鈩，
本文编号：2492947
[Abstract]:The effects of different pre-bonding time on the microstructure and composition distribution of hot-formed steel 22MnB5 zinc-based coating were studied by scanning electron microscope (SEM) and affiliated EDS energy dispersive spectroscopy (EDS). The results show that the main oxides on the surface of the coating are ZnO and Al_2O_3; after heating. When the alloy is prealloyed at 550 鈩，
本文编号：2492947
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