Influence of Deformation and Temperature on Density, Mechanical and Fatigue Properties, Structure and Electrical Conductivity of Materials Obtained from Metallic Powders Consolidated by Successive KOBO and TCAP Extrusion

#52310657

Čada Radek prof. Ing., CSc.

2023

2024

Visegrad Fund

Obecná forma

Visegrádské granty

KOBO process is a method of deforming materials that allows for direct extrusion of rods with simultaneous cyclic rotation of the die. This allows to deform the material with large deformations already at room temperature. The same is true for the TCAP method. This process allows for very large deformations in the material while maintaining its original shape. The combination of these two methods for the plastic consolidation of powders can make it possible to obtain products with a relative density close to solid material and, at the same time, high strength properties. This is one of the requirements for construction materials used in the automotive or aviation industry. The aim of the research is to analyze the impact of selected conditions of the KOBO and TCAP extrusion process on the structure and properties of materials after consolidation of metallic powders. At the same time, the purpose of the research is to determine the technology that allows to obtain materials with a relative density similar to that of a solid material and with high strength and fatigue properties. The use of this type of sequential powder extrusion (KOBO, TCAP) in combination with a properly selected heat treatment may allow to obtain products with the expected increased strength properties and density similar to that of a solid material. This will allow to deepen the knowledge about the influence of severe plastic deformations on the plastic consolidation of powders and, consequently, the possibility of using this type of materials in industry.