基于 Fe - 25Cr - 35Ni 的耐热合金中碳化铌在 900°C 和 1150°C 下的转变

IF 0.6 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING Metal Science and Heat Treatment Pub Date : 2024-02-19 DOI:10.1007/s11041-024-00977-8

E. V. Zabavicheva, S. N. Petrov, S. Yu. Kondrat’ev

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引用次数: 0

摘要

利用聚焦离子束制备的截面图，对 HP40NbTi 型耐热合金中分散的碳化铌颗粒在 900 和 1150°C 温度下长期保温后形成的金属间相的微观结构和元素组成进行了透射电子显微镜研究。在 900°C 时可检测到众所周知的 G 相的形成。当温度升至 1150°C 时，检测到参数 a = 1.084 nm（空间群 Fd3m）的 fcc 金属间相。确定了高温金属间化合物的元素组成及其形成过程中大气氮的参与。

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Transformation of Niobium Carbide in Heat-Resistant Alloys Based on Fe – 25Cr – 35Ni at 900°C and 1150°C

Cross sections prepared using a focused ion beam are used for a transmission electron microscopy study of the microstructure and elemental composition of the intermetallic phases formed after long-term holding a 900 and 1150°C at the boundaries of dispersed particles of niobium carbide in a heat-resistant alloy of type HP40NbTi. Formation of a well-known G-phase is detected at 900°C. When the temperature is raised to 1150°C, an fcc intermetallic phase with parameter a = 1.084 nm (space group Fd3m) is detected. The elemental composition of the high-temperature intermetallic compound and participation of atmospheric nitrogen in its formation are established.

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来源期刊

Metal Science and Heat Treatment 工程技术-冶金工程

CiteScore

1.20

自引率

16.70%

发文量

102

审稿时长

4-8 weeks

期刊介绍： Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering. Topics covered include: New structural, high temperature, tool and precision steels; Cold-resistant, corrosion-resistant and radiation-resistant steels; Steels with rapid decline of induced properties; Alloys with shape memory effect; Bulk-amorphyzable metal alloys; Microcrystalline alloys; Nano materials and foam materials for medical use.