Design Of Prediction Mathematical Models For Calculation Of Thermodynamic Parameters Of Cast Heat-resistant Nickel Alloys

Abstract

Проанализированы и обработаны экспериментальные данные термодинамических параметров широкого ряда отечественных и зарубежных литейных жаропрочных никелевых сплавов пяти поколений. Получены математические регрессионные модели для прогнозирующих расчетов термодинамических параметров, которые могут использоваться при разработке новых перспективных сплавов или модернизации существующих промышленных сплавов. Библиогр. 25, табл. 2, ил. 5. К л ю ч е в ы е с л о в а : литейные жаропрочные никелевые сплавы; система легирования; термодинамические параметры; математическая регрессионная модель

Automated designing of manufacturable high-temperature alloy composition on nickel base for manufacture of all-cast nozzle apparatuses

“…It is known [1,2,[14][15][16][17] that the value and sign of parameter of doping disbalance DE determines a direction of the reactions in g-solid solution and tendency of high-temperature nickel alloys to precipitation of that or another type of TCP (topologically closepacked) phases. Thus, the alloys with large negative doping disbalance (DE < -0.04) have high probability to formation of heterotypical compounds, i.e.…”

“…traditional computation methods PHACOMP (N n ) [7,11], New PHACOMP (M d ) [13], DE-method [14][15][16][17] with their known regression equations (RE) as well as received mathematical regression models (RM) [12,[21][22][23][24] (Table 3). Computations using CALPHAD method [25] on structural-phase and physical parameters [24,26] were carried out based on criteria (parameters) of serviceability of cast HNA, grounded on works [12,[21][22][23][24].…”

The role of taking into account the interatomic interaction in predicting the complex of structurally-sensitive properties of steels and alloys for special purpose

“…In [13], researchers also noted a significant discrepancy when calculating the solidus temperature using the JMatPro software for nickel alloys in particular for CW6MC and N3M alloys is 112 and 177, respectively, which is probably due to the fact that the content of of alloys for which software was developed based on a modified Shile approximation Figure 2. Comparison of experimental and calculated values of solidus temperature of high-temperature nickel alloys according to [14] As chromium-nickel steels (Table 3), are among the most popular on the domestic and foreign markets steel-smelting production, in this paper the emphasis is on the basic technological properties -their density in liquid and solid state (Figure 3). Table 3.…”