- Hydrogen embrittlement and corrosion behaviors in metals
- Metal and Thin Film Mechanics
- Microstructure and Mechanical Properties of Steels
- Welding Techniques and Residual Stresses
- Advanced Materials Characterization Techniques
- Fatigue and fracture mechanics
- Surface Treatment and Residual Stress
- Aluminum Alloy Microstructure Properties
- Material Properties and Applications
- Tribology and Wear Analysis
- Material Properties and Failure Mechanisms
- Metallurgy and Material Forming
- High Temperature Alloys and Creep
- Metal Alloys Wear and Properties
- GaN-based semiconductor devices and materials
- Corrosion Behavior and Inhibition
- Engineering Diagnostics and Reliability
- Surface Treatment and Coatings
University of Žilina
2023-2025
VSB - Technical University of Ostrava
2024
This study systematically investigates the influence of heat treatment on mechanical and magnetic properties AISI 304 austenitic stainless steel following cold rolling. Experimental analyses were conducted samples annealed at 50 °C to 1200 in 25 increments. The characterized through chemical metallographic analyses, microhardness testing, hardness measurements, tear-off force evaluations. Magnetic assessed using a fluxgate sensor analyze intrinsic field variations. findings reveal that...
The application possibilities of austenitic stainless steels in high friction, abrasion and sliding wear conditions are limited by their inadequate hardness tribological characteristics. In order to improve these properties, thermochemical treatment surface plasma nitriding is suitable. This article focused on corrosion resistance the conventionally nitrided AISI 304 steel (530 °C, 24 hours) 0.05 M 0.5 sodium chloride solutions at room temperature (20 ± 3 °C), tested potentiodynamic...
Abstract The article will be focused on the analysis of influence heat treatment nitriding layer, which applied austenitic steel. AISI 304 steel delivered without used as experimental material. layer to samples by plasma nitriding. Then, after nitriding, subjected treatment. Solution annealing and sensitization chosen Experiments deal with microstructural material analysis, fractographic mechanical fatigue tests.
Austenitic steels are among the most widely used materials in industries such as automotive, food, energy, chemical, etc. They mainly due to properties corrosion resistance, good strength, hardness, or weldability. Microstructural analysis was performed on a light microscope Neo-phot 32. AISI 304 austenitic steel has microstructure formed by large number of polyhedral austenite grains different sizes. The microstructure, mechanical and fatigue properties, areas plastic zone after bending...
Hydrogen embrittlement involves the interaction between hydrogen and microstructure of metals, which can lead to an alarming loss mechanical properties. For advanced high-strength (AHS) steel S960MC grade, finds application in fields ranging from heavy machinery construction, understanding this phenomenon is important. The material's complex crystalline lattice, carefully engineered maximize strength, becomes vulnerable presence hydrogen. sources that are various. From exposure during...
Abstract The article will be focused on examining and comparing the influence of structure, sensitization corrosion fatigue properties austenitic stainless steel. methodology experiment includes tests samples attacked by intercrystalline corrosion. Therefore, test were subjected to heat treatment for sensitization. Then these long-term exposure in an aggressive solution. Experiments deal with microstructural material analysis, fractographic mechanical tests.
The application possibilities of austenitic stainless steels in high friction, abrasion, and sliding wear conditions are limited by their inadequate hardness tribological characteristics. In order to improve these properties, the thermochemical treatment surface plasma nitriding is suitable. This article focused on corrosion resistance conventionally plasma-nitrided AISI 304 steel (530 °C, 24 h) 0.05 M 0.5 sodium chloride solutions at room temperature (20 ± 3 °C), tested potentiodynamic...
Abstract This study deals with the corrosion behavior of AISI 304 stainless steel after 10, 6, 2, 1-hour sensitization heat treatment time at temperature 650 °C. Sensitization specimens is verified by ASTM A262 practice A test. Corrosion resistance evaluated electrochemical parameters potentiodynamic polarization performed in 1M NaCl solution 20 ± 3 °C on high-temperature surface oxides and their removal pickling. The etching test oxalic acid confirmed ditch microstructure complete 10...
Abstract Austenitic stainless steels are highly corrosion-resistant in common oxidation environments. However, aggressive chloride-containing solutions can evoke local corrosion, which performs an important risk the safe use of these materials. This research deals with effect solution annealing (1050 °C, 15 min) on electrochemical parameters AISI 304 and 316L steels. Corrosion resistance solution-annealed specimens is evaluated compared to as received by potentiodynamic polarization test...
The main objective of the work was to describe laboratory methods suitable for hydrogenation free-cutting steels.Furthermore, study hydrogen embrittlement 11SMn30 steel.Hydrogenation and subsequent mechanical testing hydrogenated steel is not a common method as it requires precise expensive equipment time-consuming dangerous highly reactive explosive.Currently, several theories mechanisms steels causes material degradation by hydrogen.However, those are universally valid; individual accounts...
The service life of components is related to surface abrasion, corrosion effects, as well the occurrence fatigue cracks. These effects begin spread from and therefore it very important properly influence mechanical properties materials increase life. In chemical-thermal treatment, resistance layer increased by saturating with suitably selected chemical elements. This affects change in structure properties. article will be focused on analysis fracture mechanisms samples made austenitic steel...
The article analyzes the influence of plasma nitriding and sensitization on microstructure microhardness AISI 304 austenitic steel.The steel in all states was observed a Neophot 32 optical microscope.The initial structure consisted polyhedral austenite grains different sizes.The contained large number non-metallic MnS-based inclusions.After nitriding, continuous layer formed under surface, while grain shape preserved.Carbide chromium excluded along boundaries by following processes: followed...