Journal ArticleDOI
Experimental Determination of Intermetallic Phases, Phase Equilibria, and Invariant Reaction Temperatures in the Fe–Zr System
TLDR
The phase diagram of the binary Fe-Zr system was redetermined by differential thermal analysis (DTA), electron-probe microanalysis (EPMA), x-ray diffraction (XRD), and metallography in the whole range of compositions as mentioned in this paper.Abstract:
The phase diagram of the binary Fe-Zr system was redetermined by differential thermal analysis (DTA), electron-probe microanalysis (EPMA), x-ray diffraction (XRD), and metallography in the whole range of compositions The stable intermetallic phases of the binary system are the cubic and the hexagonal polymorphs of the Fe2Zr Laves phase and the Zr-rich phases FeZr2 and FeZr3 While the cubic polymorph of the Laves phase is the stable structure at the stoichiometric Fe2Zr composition, the hexagonal C36-type polymorph of the Laves phase is a high-temperature phase that is found at Zr concentrations as low as 266 at% The Zr-rich phases FeZr2 and FeZr3 have small homogeneity ranges of about 05 at% FeZr2 is a high-temperature phase, stable between 780 and 951 °C FeZr3 decomposes peritectoidally at 851 °C The frequently reported phase Fe23Zr6 (Fe3Zr) is found not to be an equilibrium phase of the binary systemread more
Citations
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Journal ArticleDOI
Structure and stability of Laves phases. Part I. Critical assessment of factors controlling Laves phase stability
TL;DR: In this article, the stability of Laves phases has been investigated and some factors which are known to affect the occurrence and structure type of laves phases are discussed and it is shown that, at least up to now, the existing models and calculations are not well suited to give a general description of the stability.
Journal ArticleDOI
Structure and stability of Laves phases part II—structure type variations in binary and ternary systems
TL;DR: In this article, various models for the prediction of the occurrence and stability of Laves phases have been discussed and the need for careful experimental investigations of phase equilibria is demonstrated, and some general rules for the occurrence of different Laves phase polytypes are derived from a study of the results of experimental phase diagram investigations of various binary and ternary systems.
Journal ArticleDOI
Effects of boron on microstructure in cast titanium alloys
TL;DR: In this paper, trace additions of boron to commercial purity titanium result in significant microstructural changes, including the promotion of dendritic growth and refinement in both the prior-β and α-grain size.
Journal ArticleDOI
Protection of Zirconium by Alumina- and Chromia-Forming Iron Alloys under High-Temperature Steam Exposure
TL;DR: In this article, the viability of advanced oxidation-resistant Fe-base alloys to protect zirconium from rapid oxidation in high-temperature steam environments has been examined, and the applicability of these protective layers in light-water-reactor nuclear fuel structures is offered.
Journal ArticleDOI
Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties
Frank Stein,Andreas Leineweber +1 more
TL;DR: There is a broad range of successful utilization of Laves phases in functional applications including hydrogen storage material (Hydraloy), as magneto-mechanical sensors and actuators (Terfenol), or for wear and corrosion-resistant coatings in corrosive atmospheres and at high temperatures (Tribaloy).
References
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Book
Iron-binary phase diagrams
TL;DR: Aufbau der Zweistoff-Legierungen as mentioned in this paper is a monograph of Max Hansen's phase diagram of alloys, published in German in 1939.
Book
Gmelin handbook of inorganic chemistry
Ekkehard Fluck,Leopold Gmelin,R. J. Meyer,Erich Pietsch,Alfons Kotowski,Margot Becke‐Goehring,Marie-Louise Gerwien,Rudolf Warncke,Rainer Bohrer,Gottfried Olbrich,Helga Hartwig +10 more
TL;DR: The Gmelin Formula Index is updated by inclusion of the volumes which appeared up to the end of 1987, and all compounds described in the GMelin Handbook of Inorganic Chemistry in the period between 1924 and 1987 can be located.
Journal ArticleDOI
Compounds and pseudo-binary alloys with the CuAl2(C16)-type structure I. Preparation and X-ray results
TL;DR: A total of 46 binary compounds with the CuAl2(C16)-type structure have been prepared and their crystallographic properties (unit cell dimensions a and c and the atomic coordinate x) have been measured as discussed by the authors.
Book
TYPIX Standardized Data and Crystal Chemical Characterization of Inorganic Structure Types
TL;DR: In this paper, a major reference contains condensed crystal chemical information about individual structure types as well as an extensive section on the crystal chemistry of particular structure families, and it clarifies and classifies published data on intermetallic and other inorganic structures.
Journal ArticleDOI
Multiphase intermetallic alloys for structural applications
TL;DR: In this article, the effect of additional softening phases on deformability and toughness of NiAl alloys with disordered Fe-Al phase and partially transformed martensitic NiAl phase is investigated.