【摘要】：利用掃描電子顯微鏡及附屬EDS能譜儀研究了不同預(yù)合金化時間對熱成形鋼22MnB5鋅基鍍層組織形貌及成分分布的影響規(guī)律。結(jié)果表明,試樣在加熱之后,鍍層表面氧化物主要為ZnO和Al_2O_3;在550℃預(yù)合金化時,隨著時間的延長,基體中的鐵逐漸向鍍層中擴散,鍍層組成由η相、ζ相、δ相和Γ相逐漸轉(zhuǎn)變?yōu)橹挥笑Ｏ?奧氏體化之后,鍍層中的組織幾乎全部為α-Fe(Zn),只在表面有極少的Г相;預(yù)合金化保溫時間為30 min時,在900℃保溫5 min奧氏體化后能得到質(zhì)量較好的鍍層。
[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，

本文編號：2492947