Alloy constitutional diagram

Petzow, G. and Effenberg, G. (eds.) (1988 et seq.) Ternary Alloys. A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagrams (VCH, Weinheim). Prince, A. (1978) Multicomponent Alloy Constitution Bibliography 1955-1973 (The Metals Society, London). 

Upper Montclair, NJ(l953) 7)J-L.Haughton A.Prince, "The Constitutional Diagrams of Alloys, Institute of Metals,Londonf 1956) (Bibliography) 8)M.C.Smith, "Alloys Series in Physical Metallurgy, Harper, NY(1956)... 

For this purpose the chemical composition of the working alloy that would ensure the required characteristics of the unit has been computed and selected on the basis of the literature data on the binary constitution diagrams for Ce-La, La-Ni and Ce-Ni (Figs. 6,7,8,9). The ternary diagram has been computed and constructed for the Ce-La-Ni system (Fig. 10) (such diagram is unavailable in literature). 

Phase equilibrium in the lanthanum alloys with nickel in the range from 0 to 100 at. % Ni has been studied in [20, 23-26]. Two variants of the total constitution diagram for the La-Ni system are given in Figs. 7, 8. 

Figure 9 demonstrates the Ce-Ni constitution diagram reported in a number of papers [28-31] which summarize the results of DTA, X-ray, metallographic studies on the alloys prepared using 98-99 % pure Ce (by mass). 

The presence of two thermal effects in the heating curve (Fig. 12, b) testifies that the phase composition of the alloy is shifted to the phase rich in lanthanum (see the La-Ni constitution diagram). Here the LaNi5 compound has been melted congruently at 1340 °C, and the La2Ni7 compound is formed by the peritectic reaction La+LaNi5 3-La2Ni7 at 1014 °C. 

Savitskiy E.M., Terekhova V.F. Constitution diagrams of lanthan alloy with cerium and with calcium // Zhumal neorganicheskoy khimii. - 1958. - V. 3, N 3. - P. 756-762 (in Russian). 

Rough, F. A., Bauer, A. A., Constitutional Diagrams of Uranium and Thorium Alloys, Addison-Wesley Publishing Co., Reading, Mass., 1958. 

M. Hansen, K. Anderko Constitution of Binary Alloys, (McGraw-Hill, New York 1958) T.B. Massalski (ed.) Binary Alloy Phase Diagrams (Amer. Soc. for Metals. Metals Park, Ohio 1986) VoL 1... 

Occasionally, a pure component (a) phase may exhibit properties markedly different from those of the intermetallic phase which is vicinal to it on the constitutional diagram. Thus, the a-phase may dissolve more readily in a solvent or it may be attacked more readily by a reagent. In such cases it may be possible to use an excess of the pure component during the high-temperature synthesis and then liberate the intermetallic product by leaching out the matrix phase. Occasionally, also, slow cooling of the alloy melt may yield well-formed crystals of the intermetallic phase embedded in the pure component matrix, which may then be removed by some solvent. Dependii on circumstances, the matrix phase may be removed by electrolytic oxidation, by aqueous acids, by bases, or by liquid NHa. For example ... 

The constitutional diagram of the K-Na system shows a liquidus curve minimiun at —12.5°C corresponding to 77.3 wt. % K. All alloys with compositions near this point (45-90 wt. % K) are liquids at room temperature and are much more reactive than the pure metals. 

Sou] Sourmail, T., Near Equiatomic FeCo Alloys Constitution, Mechanical and Magnetic Properties , Prog. Mater. Sci., 50(7), 816-880 (2005) (Crys. Structure, Electr. Prop., Kinetics, Magn. Prop., Meehan. Prop., Morphology, Phase Diagram, Phase Relations, Review, 122)... 

Fig. 12 Nickel Titanium constitution diagram and presumed phase of nickel-titanium alloys...

Bla] Blanchard, J.R., Parke, R.M., Herzig, A.J., Constitution Diagrams for Iron-Carbon-Molybdenum Alloys , Trans. ASM, 27, 697-718 (1939) (Experimental, Phase Diagram, Meehan. Prop., 13)... 

Haughton, L.J. Prince, A. (1956) The Constitutional Diagrams of Alloys a Bibliography, 2nd. ed. Monograph and Reports Series No. 2, Institute of Metals (loM). 

MetaUich Sistem [Constitutional Diagrams of Metallic Systems] (Nauka, Moscow) p. 200. Torchinova, R.S., V.F. Terekhova and E.M. Savitskii, 1971, in Savitskii, E.M. and V.F. Terekhova, eds., Redkozemel nye Metally i Splavy (Nauka, Moscow) p. 39 [English transl. Rare Earth Metals and Alloys, Rq)t. AEC-tr-7408, National Technical Information Service, Springfield, VA, 1974]. 

Answer by author The Constitution Diagram for Stainless Steel by A, I, Schaeffler provides an estimate of the phases present at room temperature, as determined by the chemical composition equivalents (Ni and Cr). There seems to be no direct corailary between the position of the stainless steel alloy on the Constitution Diagram and the alloys, stability at low temperatures,... 

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