Phase transition in the Fe–V system
-
Naïma Boutarek
Abstract
Fe – V binary alloys with different vanadium concentrations (4 to 55 at.%) are arc melted and systematically characterized by means of; (1) differential thermal analysis, (2) optical and scanning electron microscopy coupled to an energy dispersive X-ray microprobe analysis, (3) quantitative X-ray fluorescence spectrometry, and (4) X-ray diffraction.
The present work exhibits the solidification sequences according to the observed microstructures for Fe – V synthesis alloys. For the first time, a metastable -phase was observed in Fe rich alloy (4 at.% V). The phase transition is clearly shown. It takes place at 1320°C for the alloy V1 (4 at.% V).
For higher vanadium contents (55 at.% V maximum), the -phase is no longer observable. The phase transition is also shown. The -phase precipitates directly by a congruent reaction from the -solid solution. It occurs at 1090°C for the alloy V3 (25 at.% V) and increases with the vanadium content (ranging from 25 to 55 at.% V). These results are plotted on the accepted Fe – V phase diagram.
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- Notifications
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Articles in the same Issue
- Contents
- Contents
- Editorial
- Christoph Schwink 80 years
- Basic
- Initial stage of bi-modal microstructure in TiO2-doped α-Al2O3 ceramics induced by SiO2 impurity
- Statistical thermodynamic approach to molten Fe–Cr–P
- Phase diagram of the iron-rich portion in the iron–gallium–aluminum ternary system
- Isothermal section at 773 K of the Gd–Er–Co ternary system
- Thermophysical properties of Nd-, Er-, YNi-alloys
- Influence of carbides and of the dendritic orientation on the thermal expansion of Ni-base, Co-base and Fe-base simple cast alloys
- Influence of previous ageing treatments on the strength of an Al-4.3 wt.% Mg-1.2 wt.% Cu alloy processed by ECAE
- Applied
- Formation and microstructure of (Ti, V)C-reinforced iron-matrix composites using self-propagating high-temperature synthesis
- Effect of Cr and V on phase equilibria in Co–WC based hardmetals
- Thermodynamic modeling of the Cu–Se system
- Phase transition in the Fe–V system
- Microstructural changes at the ultra-precision machined surface of Zn–Al based alloy
- Study of structural and electrical properties of arsenic ferrites
- Study of thin film structure based on MgF2, CeO2 and Al2O3 layers for optical applications
- Notifications
- DGM News
