铌和奥氏体化温度对喷镀AISI M3:2高速钢组织和性能的影响

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2021-12-20 DOI:10.1051/metal/2021097

Hebin Wang, D. Hong, L. Hou, Li Shen, P. Ou, LiFang Qiu, Zhi-gang Wang, Hong-jin Zhao

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引用次数: 0

摘要

研究了喷射成形和传统铸造制备含铌AISI M3:2高速钢的组织和性能。结果表明:与铸态合金相比，沉积态合金的晶粒细小、分布均匀，无宏观偏析;Nb主要出现在初生MC碳化物中，而对M6C碳化物的形成贡献较小。在高温奥氏体化过程中，高稳定度的富铌碳化物能够固定晶界，从而获得细小的晶粒，提高合金中溶解元素的含量。NbC碳化物的析出强化和在基体中的精细分散，使含nb高速钢具有较高的硬度和红硬度。

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Effect of niobium and austenitizing temperature on the microstructures and properties of spray-deposited AISI M3:2 high speed steel

The microstructure and properties of niobium-containing AISI M3:2 high speed steels (HSSs) fabricated by spray forming and traditional casting have been investigated. The results show that fine and uniformly-distributed grains without macrosegregation appeared in the as-deposited HSSs that differ from those of as-cast HSSs. Nb mostly appears in primary MC carbides, whereas it contributes less to the formation of M6C carbides. The high stabilization of Nb-rich MC carbides can pin the grain boundaries during high-temperature austenitizing process, thus conferring a fine grains and raising the content of dissolved alloying elements. Enhanced precipitation strengthening and fine dispersion of NbC carbides throughout the matrix contribute to the high hardness and red hardness of Nb-containing HSS.

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.