[en] Methods of microstructural differential thermal, X-ray phase and local X-ray diffraction analyses are used to study Ni-Zr-Mo alloys in ZrNi-Ni-Mo range. The system melting curve and scheme of alloys crystallization reactions are given. Position of boundary lines, temperatures and character of 9 nonvariant equilibria at crystallization in ZrNi-Zr₂Ni₇-Mo and Mo-Zr₂Ni₇-Ni partial systems are determined

[en] A critical review was made on available data for phase diagrams of NiMe⁴-Me⁵ ternary alloy systems. The Ti-Nb-Ni and Zr-V-Ni systems were studied experimentally with the use of X-ray diffraction, microstructural, local X-ray spectrum and differential thermal analyses. The main features of the studied diagrams topology were determined to be the coexistence of all binary phases with β-solid solution and the occurrence of quasi-binary sections of TiNi-Nb and TiNi₃-NbNi₃ types. The regularities in phase diagram appearance were correlated with thermodynamic stability of phases. A prediction about phase equilibria in ti(Zr, Hf)-Ta-Ni and Zr(Hf)-V(Nb)-Ni systems was presented

[en] By results of microstructural, x-ray phase, local x-ray spectral analysis of Zr-Ni-Mo system alloys in Zr-ZrNi-Mo region, the system meltability diagram and reaction scheme under alloy crystallization are presented. Boundary line position, temperatures and character of five non-variant equilibria under alloy crystallization in a partial Zr-ZrNi-Mo system are determined

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[en] V-Nb-Ni alloys cast and annealed at subsolidus temperatures are studied using differential thermal, X-ray phase, local X-ray structure and microstructure analyses. Liquidus surface, surface of solidus and phase transformations diagram at crystallization of V-Nb-Ni system alloys are plotted on the ground of the obtained results. Presence of Laves λ₁-phase structure ternary compound (MgZn₂ type), which homogeneity range on solidus surface reaches 26-55 at.% Ni by 30 at.% Nb isoconcentrate and 20-34 at.% V by Nb₅₅Ni₄₅-V₅₇Ni₄₃ cross section is determined in the studied system

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[en] By the results of metallographic and X-ray phase analyses isothermal cross section of phase diagram of the Ti-Ni-Mo system in the field of Ti-TiNi₃-Mo at 900 deg C is plotted. Solid solutions β on the titanium and molybdenum base co-exist with eta-, delta and epsilon-phases on the base of binary compounds Ti₂Ni; TiNi and TiNi₃, respectively forming two-phase and three-phase regions β+eta, β+delta, β+epsilon, β+delta+eta, β+delta+epsilon. Phase homogeneity regions on the binary compounds base in the ternary compounds system are not wide, molybdenum solubility in TiNi, TiNi₃ and Ti₂Ni constitutes 8, approximately 3 and < 2 at.%, respectively. Ternary phases in the investigated region of the Ti-Ni-Mo system at 900 deg C are not revealed

[en] Methods of optical microscopy, X-ray diffraction and micro- X-ray spectral analyses were applied to investigate Ti-Ni-Mo system at 1200 deg C. γ'-phase which is MoNi₃ base solid solution stabilized by titanium is in equilibrium with TiNi₃(epsilon) and MoNi(σ') phases and γ- and β- Ni and Mo base solid solutions. The Ti-Ni-Mo system can be triangulated into two subsystems: TiNi₃-Ti and TiNi₃-Ni

[en] The microstructure, the X-ray phase and the differential thermal analyses were used to investigate alloys of the V-Ni-Mo system. The temperatures of the beginning of melting were determined by the Pirani-Altertum method. Solidus and liquidus surfaces of the investigated ternary system were plotted. The solidification of alloys involves two nonvariant peritectic equilibria, the temperatures of which are 1290 and 1230 deg C

No abstract available