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首页> 外文期刊>Journal of Materials Science >The electroslag remelting of high-nitrogen steels
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The electroslag remelting of high-nitrogen steels

机译：高氮钢的电渣重熔

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摘要

Steels containing nitrogen at levels which are at or above the 1 Bar saturation solubility limit in the liquid at the liquidus temperature offer considerable metallurgical property advantages in many respects. For example, when nitrogen is used as a substitute for carbon in stainless grades, the alloys have superior corrosion properties especially in biomedical applications: nitrogen as a strengthening element in tool steels offers advantages in freedom from carbide particles which affect the polishability. Most of the steels grade of interest require electroslag remelting to control segregation without loss of nitrogen and the behaviour of nitrogen during this process is the subject of this work. It is concluded that the required process pressures are closely related to the alloy composition and that to prevent porosity in the product the ESR step must be carried out at an appropriate overpressure of either nitrogen or argon. The addition of nitrogen during ESR is also discussed and it is shown that this is possible only through solid additives. (C) 2004 Kluwer Academic Publishers.
机译：在液相线温度下，含氮量等于或高于液体中1 Bar饱和溶解度极限的钢在许多方面都具有相当大的冶金性能优势。例如，当在不锈钢级中用氮代替碳时，该合金具有优异的腐蚀性能，尤其是在生物医学应用中：氮作为工具钢中的增强元素具有不受碳化物颗粒影响的优点，而碳化物颗粒会影响抛光性能。感兴趣的大多数钢种都需要电渣重熔以控制偏析而又不损失氮，并且在此过程中氮的行为是这项工作的主题。结论是所需的工艺压力与合金成分密切相关，并且为了防止产品中出现孔隙，必须在适当的氮气或氩气超压下进行ESR步骤。还讨论了在ESR中添加氮气的情况，结果表明只有通过固体添加剂才能做到这一点。 （C）2004 Kluwer学术出版社。

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