Ternary Iron Alloys Research Articles

15: Critical evaluation of ternary alloys of iron and molybdenum with cobalt, chromium, manganese, and nickel

AbstractExisting experimental information on the constitutions of the four ternary systems Co-Fe-Mo, Cr-Fe-Mo, Fe-Mn-Mo, and Fe-Mo-Ni has been critically assessed, and used to suggest probable constitutional features in each case. In all cases difficulties arise because much of the work on the ternary systems was carried out before a complete understanding of the Fe-Mo system had been arrived at. Consequently, interpretation of the results was frequently incomplete or erroneous. In particular the R-phase of the Fe-Mo system was rarely considered as a constituent In the proposed equilibria. In the case of the Co-Fe-Mo system, it is possible to present a probable surface of primary separation based on original work. Solid-state isothermals from 1300 to 800°C are described. The chief feature is complete solid-solution formation between Fe7Mo6 and Co7Mo6 to form the μ-phase, and the predominating equilibrium in Fe-rich alloys is a α + γ + μ. It is also possible to arrive at a probable liquidus surface for the...

15: Critical evaluation of ternary alloys of iron and molybdenum with cobalt, chromium, manganese, and nickel

15: Critical evaluation of ternary alloys of iron and molybdenum with cobalt, chromium, manganese, and nickel

Correlation between impurity binding energies and heat of formation of alloys

We survey recent hyperfine-interaction measurements of the binding energies E B between two different impurities in dilute ternary alloys of iron, copper, silver and gold. The binding energies are related to the heat of formation of the corresponding alloys. A significant correlation between these two quantities is found.

Cellular Growth of Delta-Pearlite Formed by Carburization of Ternary Iron Alloys

Cellular Growth of Delta-Pearlite Formed by Carburization of Ternary Iron Alloys

The Atomic Magnetic Moment in bcc Ternary Iron Alloys Fe(Co Mn) and Fe(Co Cr)

In order to determine the magnetic moment of each constituent atom in bcc ternary iron alloys Fe(CoMn) and Fe(CoCr), measurements of the bulk magnetization, Mossbauer spectra of 57 Fe nuclei and NMR spin echo spectra of 59 Co nuclei have been made for each sample in entire bcc concentration ranges. It is concluded that the Co moment in both alloy systems remains nearly constant being 1.8 µ B and that Fe moment in Fe(CoMn) alloys is determined uniquely as a function of the number of 3 d -electrons, while Fe moment in Fe(CoCr) alloys is not. It is inferred that Mn atom in Fe(CoMn) alloys has parallel magnetic moment to the bulk magnetization and Cr atom in Fe(CoCr) antiparallel magnetic moment.

Precipitation Hardening in Maraging Steels -On the Martensitic Ternary Iron Alloys

Precipitation Hardening in Maraging Steels -On the Martensitic Ternary Iron Alloys

Grain boundary segregation

Equilibrium grain boundary segregation levels have been measured on binary and ternary iron alloys with tin and sulphur over a wide temperature range, by means of two complementary techniques: interfacial energy measurements and Auger electron spectroscopy. Segregation levels derived from the Gibbs adsorption theorem applied to solid/solid interfaces are fully consistent with spectroscopy measurements. It is demonstrated that at lower temperatures, equilibrium multilayer segregation exists. The observations are treated in terms of a general theory of grain boundary adsorption, which is the analogue of the B. E. T. (Brunauer, Emmett & Teller 1938) multilayer gas adsorption theory for free surfaces, and which allows for both submonolayer and multilayer segregation at grain boundaries. Furthermore, this treatment provides a physical basis for an earlier empirical correlation between interfacial solute activity and the solid solubility limit.

鉄-ボロン3元系合金に関する研究

鉄-ボロン3元系合金に関する研究

Fe-P基3元合金中のリン化物相に関する研究

Fe-P基3元合金中のリン化物相に関する研究

Fe-Si-Co系高導磁率合金の磁歪

The magnetostriction of ternary alloys of iron,silicon and cobalt have been measured in various longtudinal magnetic fields of less than 1100 Oersteds. The positive magnetostriction of Iron-Cobalt system gradually decreases with the addition of Silicon, and we obtain the saturation magnetostriction λs=0 line. This line crosses to the superlattice line,connecting with Fe3Si and FeCo, through the maximum range of permeability.