A5004556792- Surface Treatment and Residual Stress
- Surface Treatment and Coatings
- Electromagnetic Effects on Materials
- Material Properties and Failure Mechanisms
- Metal Alloys Wear and Properties
- Engineering and Environmental Studies
- Titanium Alloys Microstructure and Properties
- Engineering Diagnostics and Reliability
- Engineering Technology and Methodologies
- Material Properties and Applications
- Advanced Control Systems Optimization
- Polymer Science and Applications
- Advanced Materials Characterization Techniques
- Structural Analysis of Composite Materials
- Intermetallics and Advanced Alloy Properties
- Aerospace, Electronics, Mathematical Modeling
- Field-Flow Fractionation Techniques
- High-Velocity Impact and Material Behavior
- Process Optimization and Integration
- Fatigue and fracture mechanics
- Additive Manufacturing Materials and Processes
- Erosion and Abrasive Machining
Volgograd State Technical University
2019-2025
A semi-analytical model of deformation metal specimens surface-hardened by combined electromechanical and ultrasonic treatment under axial bending soft-cycle loads with a given asymmetry coefficient is proposed. An algorithm for reconstructing stress-strain curves fatigue strength high-strength surface layer described. Examples such diagrams steel 45 are on the basis results limited number experiments, using without continuous hardened layer.
Changes of structure, phase composition and microhardness in high-strength α + β titanium alloy were investigated after electromechanical treatment (EMT) subsequent aging. The EMT was performed with alternating current density (j 300 600 A/mm2). aging upon heating at °C exposure for 14 h. Methods scanning electron microscopy, X-ray micro spectral durometric analyses used. Modified layers (up to 200–250 µm depth) on the surface formed due intensive thermo-deformation during following...
A framework for finite-element modeling of structure formation and stress-strain state in metal alloys subjected to electromechanical treatment (EMT) is presented. The processes creating the hardened layers with ultradisperse improved operational characteristics on surface products are considered within a unified system. main stages constructing set models temperature-force actions during EMT leading structural-phase transformations technological residual stress fields described. used based...
It has been shown that in FeAl/Fe3Al/Fe(Al) coatings formed on a steel base using explosion welding and subsequent heat treatment, the main failure mechanism is cohesive. Peeling chipping of occurs only under heavy loads or case weak adhesion. established hardness layered coating with thickness 440 μm increases from substrate to surface, reaches maximum at distance 200 then decreases due an increase porosity. Its relative wear resistance ~1.5 times higher than St3 base.
Abstract Based on the differential equations of material balance and mass transfer, taking into account longitudinal mixing boiling solution, formulas working lines reinforcing exhaustive parts packed distillation column, concentration profiles along nozzle height, algorithm for calculating height are proposed.The column analytically derived, diffusion, which, when diffusion number or coefficient, is transformed known flow patterns ideal displacement in both phases. Analytically, basis...