Numerical Simulation of the Microstructure of Structural-Inhomogeneous Materials

Zabolotnyi, Oleg; Pasternak, Viktoriya; Andrushchak, Igor; Ilchuk, Nataliia; Svirzhevskyi, Kostiantyn

doi:10.1007/978-3-030-50794-7_55

Cited by 14 publications

(9 citation statements)

References 6 publications

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“…The processing of sintered porous materials differs from compact steels due to porosity and often inhomogeneous microstructure [16]. It's confirmed by research the pore stereology of powder materials [17] using the original computer-informative software for research of the new materials [18].…”

Section: Literature Reviewmentioning

confidence: 91%

Influence of the Cutting Temperature on the Surface Layer Quality When Grinding Sintered Porous Materials

Zabolotnyi

Bozhko

Machado

et al. 2021

Lecture Notes in Mechanical Engineering

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One of the features of sintered materials is porosity. Depending on the application, this can be both a disadvantage and an advantage. The porosity geometry affects the propagation of heat during the grinding of the sintered material. An experimental study of the temperature in the cutting zone during the grinding of sintered porous materials was carried out. The relationship between the contact temperature in the cutting zone, the parameters of the cutting modes during grinding, and the porosity of the part is revealed. It was found that the use of process coolants is not always possible due to the presence of pores in the material. It is proved that the cutting temperature of porous materials is higher due to the deteriorated heat dissipation properties, but the cutting temperature does not affect the degree of compaction of the surface layers of the powder material. An adequate mathematical model is obtained, which describes the change of cutting temperature depending on the material's cutting depth, grinding speed, and porosity.

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Section: Literature Reviewmentioning

confidence: 91%

Influence of the Cutting Temperature on the Surface Layer Quality When Grinding Sintered Porous Materials

Zabolotnyi

Bozhko

Machado

et al. 2021

Lecture Notes in Mechanical Engineering

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“…It was [9] found that the heat treatment time and cooling conditions affect the thickness and structure of the transition layer formed as a result of the interaction. The results of [10] show the peculiarity of porosity and coordination number calculations. The results obtained make it possible to optimize the version of the charge composition, which provides an increase in the oil permeability coefficient by 3%, which fully satisfied the technical operating conditions of the bushings.…”

Section: Literature Reviewmentioning

confidence: 91%

Improvement of Processes for Obtaining Titanium Alloys for Manufacturing Parts with Design Elements

Pasternak

Zabolotnyi

Ilchuk

et al. 2021

Lecture Notes in Mechanical Engineering

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The article presents a systematic block diagram for manufacturing TiAl titanium alloys. Based on the developed block diagram of TiAl components, the main already known stages of powder metallurgy manufacturing technology were improved. Based on the obtained chemical reaction of structurally inhomogeneous materials, the intermetallic phase relationship of titanium aluminides was revealed. It is studied that in the zone of interaction of the composition of titanium and aluminium components, a certain thickness of the transition layer is formed, which practically does not change with increasing exposure time. The crystallization process of inhomogeneous TiAl materials was studied in more detail using the constructed crystal lattice of titanium alloys. As a result, the formation of an atomic grid in space was observed. It should also be noted that the recognition of individual areas in microstructural images was carried out using the Smart-eye software package. The microscopic analysis allowed us to predict the main structural characteristics of TiAl components. In particular, to carry out more detailed control of the particles of TiAl components, their density, porosity, relationships with each other, the shape and size of TI and Al powders. The structure of the interaction of TiAl materials and the interpolation dependence of the formed intermetallic layer are also presented. Based on the conducted research, the quality indicators of parts with structural elements, particularly gears, have been improved.

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“…And this leads to a big problem and to the fact that it is impossible to get the structural properties of materials at the desired (qualitative) level [14]. Therefore, in order to ensure the effectiveness of traditional methods and powder technologies [15], as well as to obtain better indicators and properties of products for a wide purpose [16,17], while saving energy costs [18,19] and reducing labour resources [20] in the process of manufacturing such materials, it is necessary to use modern technologies and capabilities [21,22]. Namely, modern 3D modelling systems [23,24,25].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Structural Properties of Powder Materials by 3D Modeling Methods

Ruban

Pasternak

Huliieva

2022

MSF

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This article examines the main problems of modelling spherical (circular) particles. The main method of the initial process of filling lobules using the Cauchy and Reynolds problem is substantiated. An image of an object-oriented complex of free fall of a spherical particle and their many non-collision spheres is presented. Based on the obtained research results, the main parameters of the process of filling particles of heterogeneous materials. An example of visualization of the developed software product for filling material particles is given, taking into account a number of cross-sections of a cylindrical hopper in height. A histogram of the distribution of material particles from porosity over the volume of a cylindrical hopper is also constructed.

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Numerical Simulation of the Microstructure of Structural-Inhomogeneous Materials

Cited by 14 publications

References 6 publications

Influence of the Cutting Temperature on the Surface Layer Quality When Grinding Sintered Porous Materials

Influence of the Cutting Temperature on the Surface Layer Quality When Grinding Sintered Porous Materials

Improvement of Processes for Obtaining Titanium Alloys for Manufacturing Parts with Design Elements

Prediction of the Structural Properties of Powder Materials by 3D Modeling Methods

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