Comparative evaluation of the tribological properties of low-and medium-carbon steels after heat treatment and severe plastic deformation

© 2016 Advance Study Center Co. Ltd.The paper presents the results of a comparative tribological study of structural steels with a carbon content of 0.1% and 0.45%. The following thee conditions are studied: Initial (hot rolled), after heat treatment (improvement) and after improvement with subsequent severe plastic deformation (SPD) processing by equal-channel angular pressing (ECAP). It is established that the materials after different types of processing have different structural states, and demonstrate different shear strength of adhesive bonds and adhesion (molecular) components of the friction coefficient in contact with the tool steel of the R18 type. At the same time, it is revealed that the greatest effect of hardening due to microstructure refinement is observed on the specimens of low-carbon steel. Medium-carbon steel after SPD processing has approximately the same tribological properties as after heat treatment

The choice of technology hip arthroplasty with the tribological characteristics of implants

Studied the friction pair kinematic assembly hip replacements and hip human rabbits model of osteoarthritis in the dry friction and biological environment. In an experimental model of osteoarthritis in laboratory animals is illustrated by the direct correlation adhesive properties on the stage and depth of the process. Found that the tribological pair have studied various behavior characteristics depending on the magnitude of the external load and the 'hardness' of the kinematic junction.Изучены пары трения кинематического узла эндопротезов тазобедренного сустава человека и тазобедренных суставов кроликов с моделью остеоартроза в условиях сухого трения и биологической среды. В экспериментальной модели остеоартроза на лабораторных животных иллюстрируется прямая корреляция адгезионных свойств от стадии и глубины процесса. Установлено, что изученные трибологические пары имели различные характеристики поведения в зависимости от величины внешней нагрузки и «твердости» самого кинематического узла

Comparative evaluation of the tribological properties of low-and medium-carbon steels after heat treatment and severe plastic deformation

© 2016 Advance Study Center Co. Ltd.The paper presents the results of a comparative tribological study of structural steels with a carbon content of 0.1% and 0.45%. The following thee conditions are studied: Initial (hot rolled), after heat treatment (improvement) and after improvement with subsequent severe plastic deformation (SPD) processing by equal-channel angular pressing (ECAP). It is established that the materials after different types of processing have different structural states, and demonstrate different shear strength of adhesive bonds and adhesion (molecular) components of the friction coefficient in contact with the tool steel of the R18 type. At the same time, it is revealed that the greatest effect of hardening due to microstructure refinement is observed on the specimens of low-carbon steel. Medium-carbon steel after SPD processing has approximately the same tribological properties as after heat treatment

Comparative evaluation of the tribological properties of low-and medium-carbon steels after heat treatment and severe plastic deformation

© 2016 Advance Study Center Co. Ltd.The paper presents the results of a comparative tribological study of structural steels with a carbon content of 0.1% and 0.45%. The following thee conditions are studied: Initial (hot rolled), after heat treatment (improvement) and after improvement with subsequent severe plastic deformation (SPD) processing by equal-channel angular pressing (ECAP). It is established that the materials after different types of processing have different structural states, and demonstrate different shear strength of adhesive bonds and adhesion (molecular) components of the friction coefficient in contact with the tool steel of the R18 type. At the same time, it is revealed that the greatest effect of hardening due to microstructure refinement is observed on the specimens of low-carbon steel. Medium-carbon steel after SPD processing has approximately the same tribological properties as after heat treatment

Comparative evaluation of the tribological properties of low-and medium-carbon steels after heat treatment and severe plastic deformation

© 2016 Advance Study Center Co. Ltd.The paper presents the results of a comparative tribological study of structural steels with a carbon content of 0.1% and 0.45%. The following thee conditions are studied: Initial (hot rolled), after heat treatment (improvement) and after improvement with subsequent severe plastic deformation (SPD) processing by equal-channel angular pressing (ECAP). It is established that the materials after different types of processing have different structural states, and demonstrate different shear strength of adhesive bonds and adhesion (molecular) components of the friction coefficient in contact with the tool steel of the R18 type. At the same time, it is revealed that the greatest effect of hardening due to microstructure refinement is observed on the specimens of low-carbon steel. Medium-carbon steel after SPD processing has approximately the same tribological properties as after heat treatment