J. V. Luiz, N. Chaia, A. A. A. P. Silva, C. A. Nunes, G. C. Coelho
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引用次数: 0
Abstract
Phase equilibria in the Cr-Nb-V system have an important role in the development of new materials for future aerospace applications. However, the available data on this system remains limited. Therefore, this work proposes, for the first time, a liquidus projection based on the microstructural characterization of as-cast alloys. A total of twenty-seven alloys were produced and their microstructures characterized by using scanning electron microscopy (SEM) to observe the phase morphology, energy dispersive spectroscopy (EDS) and x-ray diffractometry (XRD) for phase identification. The results show a predominant primary precipitation of the BCC phase, along with two distinct regions of primary precipitation of intermetallic phases. One of these is the Laves C15 phase, originating from the Cr-Nb binary system, while the other is a phase that was identified as Φ which transforms into C15 during cooling to room temperature.
期刊介绍：
The most trusted journal for phase equilibria and thermodynamic research, ASM International''s Journal of Phase Equilibria and Diffusion features critical phase diagram evaluations on scientifically and industrially important alloy systems, authored by international experts.
The Journal of Phase Equilibria and Diffusion is critically reviewed and contains basic and applied research results, a survey of current literature and other pertinent articles. The journal covers the significance of diagrams as well as new research techniques, equipment, data evaluation, nomenclature, presentation and other aspects of phase diagram preparation and use.
Content includes information on phenomena such as kinetic control of equilibrium, coherency effects, impurity effects, and thermodynamic and crystallographic characteristics. The journal updates systems previously published in the Bulletin of Alloy Phase Diagrams as new data are discovered.
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