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Abstract
The manufacture of rolling stock components with a given life cycle based on the computerization of all design and production stages is the most promising way to increase the energy efficiency of its operation. The implementation of this approach requires the expansion of the use of technologies that provide parts with a high level of mechanical and operational properties. The state of the surface layers is important in the formation of the reliability parameters of high-loaded parts. The principles of using system approaches for the physical justification of the choice of the optimal modes of engineering grain boundaries depending on the operating conditions of products are presented. New approaches and algorithms have been created that allow quantitative and qualitative studies of the effect of technological treatments and the chemical composition of polycrystals on the strength of grain boundaries and the processes of softening of the boundary zones. Using the developed techniques, the ways to control the energy state of the internal interfaces by doping, microalloying and heat treatment were determined to increase the resistance to brittle fracture and wear of the steels used in the manufacture and repair of rolling stock.
Highlights
The operation of rolling stock with a given life cycle can significantly reduce the energy consumption of railways during transportation
Preparation of technological processes for obtaining products should include information on the parameters of the properties and behavior of materials during treatments and operating loads, making the creation of databases of computer modeling of the structure and properties of materials important. Solving these problems allows using the methods of computational materials science in digital engineering for the simultaneous design of materials and products with high reliability parameters
It should be noted that the development and use of such programs is limited by the lack of simultaneously established relationships between the damage resulting from technological processing, its development during the operation of products and the stages of the life cycle of parts and machines
Summary
The operation of rolling stock with a given life cycle can significantly reduce the energy consumption of railways during transportation The creation of such vehicles is possible based on the use of multifunctional computer systems at all stages of design, production and operation, consistently perform volumetric product design, design justification for its reliability and efficiency, the preparation of technological processes of manufacturing and engineering project management. Preparation of technological processes for obtaining products should include information on the parameters of the properties and behavior of materials during treatments and operating loads, making the creation of databases of computer modeling of the structure and properties of materials important Solving these problems allows using the methods of computational materials science in digital engineering for the simultaneous design of materials and products with high reliability parameters.
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