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Effect of Si/Mn Ratio on Galvannealing Behavior of Si-added Steel

机译:硅锰比对硅钢镀锌行为的影响

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摘要

The influence of the Si/Mn ratio on the galvannealing behavior of 1.5 wt% Si - 1.5—2.5 wt% Mn-added steel in the Fe oxidation-reduction process was investigated. The Si/Mn ratio of the steel affected the formation of Si-containing oxides during the annealing process. The amount of SiC>2 formed on the steel surface decreased with as the Si/Mn ratio decreased, while the amount of Mn_2SiO_4 increased. In addition, the internal oxide formed in a relatively narrow area near the surface in the lower Si/Mn ratio sample, which indicated that the content of solute Si near the surface was lower in the lower Si/Mn ratio sample. The galvannealing reaction was accelerated by decreasing the Si/Mn ratio of the steel. The species and morphology of the Si-containing oxides determined the galvannealing behavior of the Si-added steel. The Si-containing selective surface oxide affected the formation of the initial Fe-Zn intermetallic compounds (IMC) during hot-dipping in molten Zn. The formation of SiO_2 was suppressed in the sample with the lower Si/Mn ratio, which resulted in accelerated Fe-Zn IMC formation. On the other hand, solute Si in the steel affected the growth of the Fe-Zn IMC during heating in the galvannealing process. The content of solute Si was assumed to be lower in the lower Si/Mn ratio sample, which resulted in acceleration of Fe-Zn IMC growth.
机译:研究了Si / Mn比对1.5%(重量)的Si-1.5-2.5%(重量)的Mn添加钢在Fe氧化还原过程中镀锌行为的影响。钢的Si / Mn比会影响退火过程中含Si氧化物的形成。随着Si / Mn比的降低,在钢表面形成的SiC> 2的数量减少,而Mn_2SiO_4的数量增加。另外,在较低的Si / Mn比样品中,在表面附近的相对狭窄的区域中形成了内部氧化物,这表明在较低的Si / Mn比样品中,表面附近的固溶Si的含量较低。通过降低钢的Si / Mn比,可以加快镀锌退火反应。含硅氧化物的种类和形态决定了含硅钢的热镀锌行为。含硅的选择性表面氧化物会在熔融锌热浸过程中影响初始Fe-Zn金属间化合物(IMC)的形成。 Si / Mn比较低的样品可抑制SiO_2的形成,从而加速了Fe-Zn IMC的形成。另一方面,在镀锌退火过程中加热期间,钢中的固溶硅影响了Fe-Zn IMC的生长。较低Si / Mn比样品中的固溶Si含量较低,这会加速Fe-Zn IMC的生长。

著录项

  • 来源
    《ISIJ international》 |2018年第9期|1600-1607|共8页
  • 作者单位

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

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

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

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

    Si-added steel; hot-dip galvanizing; galvannealing behavior; Si-containing oxide;

    机译:硅钢热浸镀锌;镀锌行为;含硅氧化物;

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