Wear Resistant Steels and Casting Alloys containing Niobium Carbide
Wear Resistant Steels and Casting Alloys containing Niobium Carbide
复制标题
含碳化铌的耐磨钢和铸造合金
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Huth
中科院分区：
文献类型：
--
作者：
W. Theisen;S. Siebert;S. Huth
铌，像钛和钒一样，形成超硬MC碳化物，由于对其他金属合金元素的溶解度低，在技术合金中保持相对纯净。然而，由于它们比通常用于耐磨合金的析出的碳化铬具有更高的硬度，因此它们适合作为替代硬相。这一贡献涉及新的耐磨钢和铸造合金含有铌碳化。其中包括二次硬化堆焊合金、用于高温磨损的复合铸造合金、白口铸铁以及熔体冶金和粉末冶金生产的抗腐蚀冷加工工具钢的两种变体。本文还讨论了一种耐热铸造合金。在平衡计算的基础上，分析了合金在生产过程中形成的微观组织，并对合金的磨料磨损和耐腐蚀性等重要性能进行了讨论。
Niobium, like titanium and vanadium, forms superhard MC carbides that remain relatively pure in technical alloys on account of their low solubility for other metallic alloying elements. However, because they have a greater hardness than the precipitated chromium carbides commonly used in wear‐resistant alloys, they are suitable as alternative hard phases. This contribution deals with new wear‐resistant steels and casting alloys containing niobium carbide. These include a secondary hardening hardfacing alloy, a composite casting alloy for wear applications at elevated temperatures, a white cast iron as well as two variants of a corrosion‐resistant cold‐work tool steel produced by melt metallurgy and by powder metallurgy. A heat‐resistant casting alloy is also discussed. Based on equilibrium calculations the microstructures developing during production of the alloys are analysed, and the results are discussed with respect to important properties such as abrasive wear and corrosion resistance.