A5039793539- Aluminum Alloys Composites Properties
- Magnesium Alloys: Properties and Applications
- Aluminum Alloy Microstructure Properties
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Fatigue and fracture mechanics
- Metal Alloys Wear and Properties
- High-Temperature Coating Behaviors
- Advanced materials and composites
- Microstructure and mechanical properties
- High Temperature Alloys and Creep
- Metal and Thin Film Mechanics
- Materials Engineering and Processing
- Material Properties and Applications
- Engineering Applied Research
- High Entropy Alloys Studies
- Microstructure and Mechanical Properties of Steels
- Corrosion Behavior and Inhibition
- Potato Plant Research
- Advanced ceramic materials synthesis
- Orthodontics and Dentofacial Orthopedics
- Structural Load-Bearing Analysis
- Electronic Packaging and Soldering Technologies
- Statistical Methods and Inference
- Constraint Satisfaction and Optimization
Brno University of Technology
2009-2024
Institute of Solid Mechanics
2019
The use of zinc-based materials as biodegradable for medical purposes is offered a possible alternative to corrosion-less resistant magnesium-based materials. Zinc powders with two different particle sizes (7.5 µm and 150 µm) were processed by the methods powder metallurgy: cold pressing, pressing followed sintering hot pressing. microstructure prepared was evaluated in terms light optical microscopy, mechanical properties analyzed Vickers microhardness testing three-point bend testing....
Magnesium with its mechanical properties and nontoxicity is predetermined as a material for biomedical applications; however, high reactivity limiting factor usage. Powder metallurgy one of the promising methods enhancement and, due to introduced plastic deformation, can also have positive influence on corrosion resistance. Pure magnesium samples were prepared via powder metallurgy. Compacting pressures from 100 MPa 500 used samples’ preparation at room temperature elevated temperatures. The...
New Mg-3Zn-2Ca magnesium alloy was prepared using different processing techniques: gravity casting as well squeeze in liquid and semisolid states. Materials were further thermally treated; thermal treatment of the cast additionally combined with equal channel angular pressing (ECAP). Alloy processed by state exhibit improved plasticity; ECAP positively influenced both tensile compressive characteristics alloy. Applied heat distribution chemical composition present intermetallic phases....
This paper examines the softening behaviour of cold sprayed 7075 aluminum alloy after isothermal annealing. The as-received powder was deposited by a high-pressure spray device using heated nitrogen as propellant gas. To investigate effects post-deposition heat treatment, excised samples were isochronally annealed in temperature range 200 to 400°C. feedstock and free-standing coatings initially characterized through various electron microscopy techniques (SEM, EDS, EBSD) relevant...
The plasticity models in finite element codes are often not able to describe the cyclic phenomena satisfactorily. Developing a user-defined material model is demanding process, challenging especially for industry. Open-source Code_Aster rapidly expanding and evolving software, capable of overcoming above-mentioned problem with implementation. In this article, Chaboche-type kinematic hardening evolution rules non-proportional as well strain memory effects was studied through calibration...
Abstract The main advantage of magnesium and its alloys is high specific strength biocompatibility. A modern approach to magnesium-based materials preparation powder metallurgy. This technique allows new with a unique structure, chemical composition, controlled porosity. In this study, cold compaction was studied. Magnesium average particle size 30 μm compacted applying pressures 100 MPa, 200 300 400 MPa 500 at laboratory temperature. Influence compacting pressure studied microstructural...
Magnesium alloy QE22 (nominal composition 2 wt % Ag, mixture of rare earth elements, balance Mg) was reinforced with 5 vol Saffil fibers and 15 SiC particles. The hybrid composite prepared via the squeeze cast technique. microstructure monolithic analyzed using scanning electron microscopy. Elastic modulus measured at room temperature modeled by Halpin–Tsai–Kardos mathematical model. strengthening effect particles calculated compared experimentally obtained values. main terms were...
Magnesium-zinc based materials are characteristic with the creation of intermetallic phases, strongly influencing material mechanical properties. Mg-Zn powder mixture (10 % wt. Zn) was processed by hot pressing method under 500 MPa at 300 °C. Microstructure prepared analyzed in terms light optical microscopy and scanning electron microscopy. Chemical phase composition were energy-dispersive X-ray spectroscopy diffraction, respectively. Microhardness testing adopted to characterize created...
Abstract The ductile failure predictions have been an issue in many engineering applications. It begins with a design of machines and tools, continues evaluation manufacturing processes, last but not least ends the assessment various structures. paper deals predictability used criteria for random structure aluminum alloy 2024-T351, which was performed under conditions room temperature three-point bending. bi-failure mode creates space numerical studies approaches gives insight into model...
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
The aim of this paper is to study fatigue behaviour 7075 aluminium alloy at room temperature for both important directions (longitudinal as well transversal) with respect the direction forming. Smooth test bars were subjected symmetrical push-pull loading stresses which cover whole range lifetime from UTS permanent limit. results are presented above all S-N curves fitted using suitable regression functions lead precise and reliable determination limits.
X37CrMoV51 tool steel for plastic working and heat cutting is usually used in whole volume quenched state secondary hardness. Using high-energetic sources like electron beam or laser possible repeated surface quenching of chosen localities with complicated geometry. The treatment leads to local hardness improvement which results wear damage decrease.Delivered specimens were using technology. paper deals influence individual technological parameters the on final properties treated localities....
The contribution deals with an analysis of thick wear-resistant coatings produced on the surface cast iron friction bearings by means twin wire arc spraying or pouring, aim comparing two manufacturing technologies. In addition to a detailed microstructure and phase composition types coating, their mechanical adhesion properties were established (using tensile shear stress testing methods as well cyclic thermal shocks).