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Abstract—A method for commuter-assisted development of the optimum compositions of new nickel superalloys using the Approx computer method, which has the highest accuracy, is presented. [ABSTRACT FROM AUTHOR]

The basic principles of computer-aided determination of the optimum chemical composition of an alloy during its development based on the requirements imposed on its characteristics are considered. [ABSTRACT FROM AUTHOR]

The role of the New Phacomp method, which is used to estimate the position of the phase boundaries of the alloying regions characterized by the formation of embrittling and performance-decreasing TCP compounds in the γ matrix of nickel alloys, is estimated. A new approach to mathematical modeling of high-temperature alloys, which is based on optimization software, is proposed. [ABSTRACT FROM AUTHOR]

The modern approaches to modeling for creating new nickel-based superalloys are analyzed. The computer calculation methods used in domestic and foreign practice and based on multifactor design of experiments are presented. [ABSTRACT FROM AUTHOR]

More than 150 industrial and experimental nickel superalloys are analyzed to construct analytical composition–property relationships for materials with equiaxed (disk) and single-crystal structures. These relationships are used to analyze the influence of alloying elements on the strength characteristics of these groups of materials. The analysis results are used to create a new high-temperature alloy SDZhS-15 for gas turbine disks. [ABSTRACT FROM AUTHOR]

More than 150 industrial and experimental nickel superalloys are analyzed to construct analytical composition–property relationships for materials with equiaxed (disk) and single-crystal structures. These relationships are used to analyze the influence of alloying elements on the strength characteristics of these groups of materials. The analysis results are used to create a new high-temperature alloy SDZhS-15 for gas turbine disks. [ABSTRACT FROM AUTHOR]

The character of changing the M()γ criterion, which is used in the New PHACOMP method and determines the ability of nickel superalloys to form embrittling TCP phases, is determined, and new methods for optimizing their compositions are proposed. They reliably ensure the absence of the phases in the structure of these materials depending on the alloy composition and the dendritic segregation retained after heat treatment. A technique is proposed to adjust the composition of nickel superalloy intended for operation at very high temperatures (1050–1150°C) under conditions of significantly dissolved strengthening γ' phase. [ABSTRACT FROM AUTHOR]

Results of experimental studies and numerical modeling of high strain rate of aluminum alloy AK4-1 (analog AU2GN) have been presented. Using Split Hopkinson Pressure Bar (SHPB) method stress-strain curves under compression and tension have been obtained. On the basement of these results appropriate parameters of some constitutive equations have been calculated. Strength and deformation material failure properties, dynamic crack resistance, dynamic friction factor for material pair aluminum-titanium have been obtained by carrying out of modificated SHPB tests. A verification of the constitutive equations has been realized by dynamic indentation method and modified Taylor test. [ABSTRACT FROM AUTHOR]