• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Segregation Mechanism of Al-based Oxides on Surface of Zn-0.2mass%AI Hot-dip Galvanized Steel Sheets
【24h】

Segregation Mechanism of Al-based Oxides on Surface of Zn-0.2mass%AI Hot-dip Galvanized Steel Sheets

机译：Zn-0.2mass％AI热浸镀锌钢板表面氧化物氧化物的分离机理

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

It is known that the Al added to the Zn coating layer of hot-dip galvanized steel sheets (HDG) segregates on the surface of temper-rolled HDG as Al-based oxides with increasing aging time in air at room temperature. In this study, the surfaces of Zn-0.2mass%AI HDG with and without temper rolling were investigated to clarify the segregation mechanism. Specimens with a Zn coating weight of 55-57 g/m~2 including 0.19-0.20 mass% of Al were used. The specimens were aged in air at 20°C or held in liquid nitrogen, and the surface and cross sections of the specimens were then observed and analyzed by XRF, SEM-EDX and EBSD. As a result, it was found that the velocity of Al-based oxide segregation on the surface of the temper-rolled HDG was much higher than that of the HDG without temper rolling. This was attributed to the difference in the area where formation of Al-based oxides was possible. It was also found that the Zn crystal grains in the coating layer were refined by recrystallization due to contact with the temper roll, resulting in an increased number of grain boundaries that can serve as Al diffusion paths. Some unrecrys-tallized grains also remained after temper rolling and could increase the number of formation sites for Al-based oxides, as they contain numerous dislocations that can serve as Al diffusion paths. These two different formation sites could lead to difference in the segregation rates observed in this study.
机译：众所周知，Al在热浸镀锌钢板（HDG）的Zn涂层中加入的热浸镀锌钢板（HDG）的偏合，作为Al基氧化物，在室温下增加空气中的老化时间。在该研究中，研究了Zn-0.2mass％AI HDG的表面，用于阐明分离机制。使用Zn涂层重量为55-57g / m〜2的标本，包括0.19-0.20质量％的Al。试样在20℃下在空气中老化，或保持在液氮中，然后通过XRF，SEM-EDX和EBSD观察并分析样品的表面和横截面。结果，发现在发脾轧HDG表面上的基于氧化物氧化物偏析的速度远高于HDG的速度，而不会脾脏轧制。这归因于铝基氧化物形成的区域的差异。还发现涂层中的Zn晶粒在涂层中通过重结晶来改进由于与发脾辊接触而改变，导致可以用作Al扩散路径的晶界数增加。一些未凝集的血液粒子也仍然保持在回火轧制后，并且可以增加Al基氧化物的形成位点的数量，因为它们含有许多可以用作Al扩散路径的脱位。这两个不同的形成位点可能导致本研究中观察到的分离率的差异。

著录项

  • 来源
    《ISIJ international》 |2020年第8期|1765-1773|共9页
  • 作者

    Katsuya HOSHINO; Katsunari OIKAWA; Wataru TANIMOTO; Masayasu NAGOSHI; Masaki KOBA;

  • 作者单位

    Steel Research Laboratory JFE Steel Corporation 1 Kokan-cho Fukuyama Hiroshima 721-8510 Japan Department of Metallurgy Graduate School of Engineering Tohoku University 6-6-02 Aoba Aramaki Aoba-ku Sendai 980-8579 Japan;

    Department of Metallurgy Graduate School of Engineering Tohoku University 6-6-02 Aoba Aramaki Aoba-ku Sendai 980-8579 Japan;

    West Japan Solution Division JFE Techno-Research Corporation 1 Kokan-cho Fukuyama Hiroshima 721-8510 Japan;

    Functional Materials Solution Division JFE Techno-Research Corporation 1-1 Minamiwatarida-cho Kawasaki-ku Kawasaki 210-0855 Japan;

    Steel Research Laboratory JFE Steel Corporation 1 Kokan-cho Fukuyama Hiroshima 721-8510 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hot-dip galvanizing; steel sheets; selective oxidation; segregation; Al-based oxides; zinc; two-phase separation; diffusion; microstructure; recrystallization;

    机译：热浸镀锌;钢板;选择性氧化;隔离;基于氧化物;锌;两相分离;扩散;微观结构;重结晶;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号