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By Günter Effenberg

Volume eleven of staff IV provides section diagrams, crystallographic and thermodynamic information of ternary alloy platforms. The subvolume D offers with iron platforms, with half 1 contemplating chosen structures from Al-B-Fe to C-Co-Fe. At ambient strain the equilibria of every person ternary approach are mentioned as capabilities of temperature yielding spatial diagrams whose sections and projections are displayed The part equilibria are defined by way of liquidus, solidus and solvus projections, isothermal, vertical and quasibinary sections. information on invariant equilibria are quite often given within the type of tables and response schemes.

The quantity varieties a entire evaluation and rigorous systematization of the almost immediately to be had information. for every procedure the customarily conflicting literature and contradictory info has been completely evaluated by way of a crew of specialists, MSIT, and will hence be offered in a regular layout. again to the 12 months 1900 the literature has been reviewed, implying attainable reinterpretations from ultra-modern country of data, and integrated within the quantity. The tables and diagrams are preceded through descriptive commenting texts.

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Extra resources for Selected Systems from Al-B-Fe to C-Co-Fe (Landolt-Börnstein: Numerical Data and Functional Relationships in Science and Technology - New Series / Physical Chemistry)

Example text

A, A300(1–2), 183–189 (2001) (Experimental, Mechan. , “Comprehensive ab Initio Thermodynamic Treatment of Impurities in Ordered Alloys: Application to Boron in B2 Fe-Al”, Phys. Rev. , 89(22), 225502 (2002) (Calculation, Crys. Structure, Magn. , 73(12), 543–548 (2002) (Experimental, Mechan. , Research at Univ. Wien (unpublished) (2002) (Phase Diagram, Phase Relations, Crys. , “Vacancy Formation and Effects in FeAl”, Intermetallics, 11(6), 507–528 (2003) (Experimental, Crys. Structure, Mechan. , “Suzuki Effect on {001} Stacking Faults in Borondoped FeAl Intermetallics”, Scr.

Table 2). All Al-rich phases that are in a solid state at 1000°C (based on Fe4Al13, Fe2Al5, FeAl2, Cr4Al9 and Cr5Al8) extend deep into the ternary system. % Fe, respectively (Table 2). The lattice parameters of the, Cr5Al8 (r) (γ2) phase versus Fe content are presented in Figs. 1a, 1b. %)) exhibits a mixed microstructure composed of featureless and cellular morphologies. According to X-ray data, the equilibrium Cr2Al13 phase coexists in the alloy with the aluminium matrix and an unknown phase.

The atomic and magnetic structures of the 6 phase have been discussed by several authors [1985And, 1994Mor, 1994Oda, 1995Fuj, 1998Iva]. 64 is ferromagnetic with Tc = 210°C. The magnetic moment of Fe is determined primarily by the nearest neighbor C atoms. Quantum-mechanical calculations show that the transition from para to ferromagnetic state, with increasing Al content, is caused by the charge transfer and p-d hybridization [1994Mor]. The coercivity and remenance of κ phase was reported by [1985Bri].

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