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

被引：0

作者：

Zabavicheva, E. V. ^{[1
]}

Petrov, S. N. ^{[1
]}

Kondrat'ev, S. Yu. ^{[2
]}

机构：

[1] Kurchatov Inst, Cent Res Inst Struct Mat Prometey, Natl Res Ctr, St Petersburg, Russia

[2] Peter Great St Petersburg Polytech Univ, St Petersburg, Russia

来源：

METAL SCIENCE AND HEAT TREATMENT | 2024年 / 65卷 / 9-10期

关键词：

heat-resistant austenitic alloys of series HP; microstructure; phase composition; phase transformations; electron microscopy; intermetallic and carbide phases; STAINLESS-STEEL; MICROSTRUCTURE EVOLUTION; AS-CAST; G-PHASE; PRECIPITATION;

D O I：

10.1007/s11041-024-00977-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

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 degrees 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 degrees C. When the temperature is raised to 1150 degrees 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.

引用

页码：605 / 612

页数：8

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