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首页> 外文期刊>ISIJ international >Influence of Cr Addition on Selective Oxidation Behavior of Mn-Added High-Strength Steel Sheet
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Influence of Cr Addition on Selective Oxidation Behavior of Mn-Added High-Strength Steel Sheet

机译：Cr的添加对Mn添加高强度钢板选择氧化行为的影响

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摘要

In the manufacture of high tensile strength sheet steels (HSS) containing Cr and Mn, selective surface oxidation of Cr and Mn affects the wettability of the HSS with molten Zn and leads to coating defects in the hot-dip galvanizing process. Therefore, it is important to clarify the selective surface oxidation behavior of Cr- and Mn-bearing steel from the viewpoint of active utilization of galvannealed HSS.The focus of the present study is an investigation of the influence of the amount of Cr addition on selective surface oxidation, which is thought to determine the wettability of cold-rolled HSS containing 0–0.6 mass% Cr-1.7 mass% Mn with molten Zn. The wettability was investigated by measuring the contact angle of molten Zn containing 0.14 mass% Al (Zn–Al) on the HSS. Surface and cross-sectional analyses were performed using secondary and transmission electron microscopes. Selective surface oxidation behavior was investigated by glow discharge spectroscopy.The main results obtained are as follows. The contact angle of Zn–Al on the HSS tended to decrease as the amount of Cr addition increased up to 0.6 mass% due to the increment of MnCr_(2)O_(4), which is known as Cr–Mn spinel and reacts with molten Al more easily than MnO.
机译：在制造含有Cr和Mn的高拉伸强度钢板（HSS）时，Cr和Mn的选择性表面氧化会影响HSS与熔融Zn的润湿性，并导致热浸镀锌过程中出现涂层缺陷。因此，从有效利用镀锌高速钢的角度出发，弄清含铬和含锰钢的选择性表面氧化行为很重要。本研究的重点是研究铬的添加量对选择性的影响表面氧化被认为决定了含有0-0.6质量％Cr-1.7质量％Mn与熔融Zn的冷轧高速钢的润湿性。通过测量含0.14质量％Al（Zn–Al）的熔融Zn在HSS上的接触角来研究润湿性。使用二次和透射电子显微镜进行表面和横截面分析。通过辉光放电光谱法研究了选择性表面氧化行为。获得的主要结果如下。由于MnCr_（2）O_（4）的增加，Cr的添加量增加到0.6质量％，Zn-Al在HSS上的接触角趋于减小，这称为Cr-Mn尖晶石并与之反应。熔融铝比MnO更容易。

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