A. Stefanik
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View article: Analysis of Roll Pass Wear in the Railway Rail Rolling Process
Analysis of Roll Pass Wear in the Railway Rail Rolling Process Open
The rolling process is one of the most efficient methods for manufacturing long products with both regular and more complex cross-sectional shapes, the latter requiring the development of geometrically complex roll passes. Railway rails ar…
View article: Investigation of the Effect of the Shape of Cutting Knives Limiting Burr in High-Strength Multiphase Steel Sheets
Investigation of the Effect of the Shape of Cutting Knives Limiting Burr in High-Strength Multiphase Steel Sheets Open
In this study, numerical modeling and experimental tests of the sheet metal cutting process were carried out in order to determine the shape of the cutting knives for a roller shear, ensuring the minimization of burr on the cut edge. A rol…
View article: The influence of the rolling method on cold forming ability of explosive welded Ti/steel sheets
The influence of the rolling method on cold forming ability of explosive welded Ti/steel sheets Open
Products made of clad sheets are a cost-effective alternative to products made entirely of cladding material. The cladding process aims to enhance functional properties, such as corrosion resistance and tribological properties, or modify m…
View article: Effect of the Rolling Process on the Properties of the Mg/Al Bimetallic Bars Obtained by the Explosive Welding Method
Effect of the Rolling Process on the Properties of the Mg/Al Bimetallic Bars Obtained by the Explosive Welding Method Open
This study aims to analyze the influence of the rolling process on the microstructure and corrosion properties of the Mg/Al bimetallic bars obtained by the explosive welding method. The bars investigated were rolled using two different typ…
View article: Microstructure and corrosion resistance of Ni-Ti-Al multi-layer laminates manufactured by explosive welding with subsequent rolling
Microstructure and corrosion resistance of Ni-Ti-Al multi-layer laminates manufactured by explosive welding with subsequent rolling Open
In the present work, an explosive welding technique was used to manufacture novel multi-layer laminates consisting of nickel (Ni), titanium (Ti), and aluminium (Al). Produced laminates were subsequently plastically deformed using symmetric…
View article: Microstructure-related properties of explosively welded multi-layer Ti/Al composites after rolling and annealing
Microstructure-related properties of explosively welded multi-layer Ti/Al composites after rolling and annealing Open
The processes of rolling and annealing of explosively welded multi-layered plates significantly affect the functional properties of the composite. In current research, fifteen-layered composite plates were fabricated using a single-shot ex…
View article: Study on Symmetry and Asymmetry Rolling of AA2519-T62 Alloy at Room-Temperature and Cryogenic Conditions
Study on Symmetry and Asymmetry Rolling of AA2519-T62 Alloy at Room-Temperature and Cryogenic Conditions Open
The aim of this investigation was to identify the effect of rolling at room temperature and under cryogenic conditions on selected properties and the microstructure of the AA2519-T62 aluminum alloy. The rolling processes were conducted wit…
View article: Changes in the Properties in Bimodal Mg Alloy Bars Obtained for Various Deformation Patterns in the RSR Rolling Process
Changes in the Properties in Bimodal Mg Alloy Bars Obtained for Various Deformation Patterns in the RSR Rolling Process Open
The paper presents the theoretical and experimental research conducted to date regarding the possibility of obtaining round bars from AZ31 magnesium alloy with a bimodal structure rolled in the radial shear rolling process (RSR) technology…
View article: Effect of the Shape of Rolling Passes and the Temperature on the Corrosion Protection of the Mg/Al Bimetallic Bars
Effect of the Shape of Rolling Passes and the Temperature on the Corrosion Protection of the Mg/Al Bimetallic Bars Open
The paper presents the results of experimental tests of the rolling process of Mg/Al bimetallic bars in two systems of classic passes (horizontal oval-circle-horizontal oval-circle variant I) and modified (multi-radial horizontal oval-mult…
View article: Theoretical and experimental analysis of the backward extrusion process with a rotational die of AZ31 alloy
Theoretical and experimental analysis of the backward extrusion process with a rotational die of AZ31 alloy Open
In this work theoretical and experimental analysis of the backward extrusion with a rotary die of the AZ31 alloy has been performed. The modification of the classical extrusion was based on the use of a rotary die. The results of theoretic…
View article: Effect of Asymmetric Accumulative Roll-Bonding process on the Microstructure and Strength Evolution of the AA1050/AZ31/AA1050 Multilayered Composite Materials
Effect of Asymmetric Accumulative Roll-Bonding process on the Microstructure and Strength Evolution of the AA1050/AZ31/AA1050 Multilayered Composite Materials Open
This paper aimed to propose the fabrication of light, Al/Mg/Al multilayered composite. Initially prepared three-layered feedstock was subjected to deformation during four rolling cycles (passes) using the conventional and modified accumula…
View article: Microstructure and properties of 1050A/AZ31 bimetallic bars produced by explosive cladding and subsequent groove rolling process
Microstructure and properties of 1050A/AZ31 bimetallic bars produced by explosive cladding and subsequent groove rolling process Open
Within the framework of this study, the 1050A/AZ31 round bimetal bars were produced by the explosive cladding method and subsequent groove rolling process. LM/SEM investigation shown that by proper selection of the explosive cladding param…
View article: The Effect of Post-Weld Hot-Rolling on the Properties of Explosively Welded Mg/Al/Ti Multilayer Composite
The Effect of Post-Weld Hot-Rolling on the Properties of Explosively Welded Mg/Al/Ti Multilayer Composite Open
The paper describes an investigation of an explosively welded Mg/Al/Ti multilayer composite. Following the welding, the composite was subjected to hot-rolling in three different temperatures: 300 °C, 350 °C and 400 °C, with a total relativ…
View article: Analysis of the Effect of Rolling Speed on the Capability to Produce Bimodal-Structure AZ31 Alloy Bars in the Three-High Skew Rolling Mill
Analysis of the Effect of Rolling Speed on the Capability to Produce Bimodal-Structure AZ31 Alloy Bars in the Three-High Skew Rolling Mill Open
A numerical analysis of the process of single-pass rolling of AZ31 magnesium alloy bars in the three-high skew rolling mill has been carried out in the study. Based on the obtained investigation results, the effect of rolling speed on the …
View article: Theoretical and Experimental Analysis of Mg/Al Bimetallic Handle Forging Process
Theoretical and Experimental Analysis of Mg/Al Bimetallic Handle Forging Process Open
The present paper reports the results of theoretical and experimental studies of the process of die forging a bimetallic door handle intended for the production of a helicopter. The aim of the studies was to develop and implement a technol…
View article: Numerical and Experimental Modeling of Plastic Deformation the Multi-Layer Ti/Al/Mg Materials
Numerical and Experimental Modeling of Plastic Deformation the Multi-Layer Ti/Al/Mg Materials Open
The paper has presented the results of theoretical studies and experimental tests of the plastic deformation of multi-layered Ti/Al/Mg specimens. Theoretical studies were carried out using the Forge2011® computer program. Physical modeling…
View article: Groove Rolling Process of Mg/Al Bimetallic Bars
Groove Rolling Process of Mg/Al Bimetallic Bars Open
The paper presents the results of the experimental tests of Mg/Al bimetallic bars rolling process in classic and multi-radial modified round-oval-round passes. The bimetallic bar consist of magnesium core, grade AZ31 and aluminium outer la…
View article: Theoretical and Experimental Analysis of Formability of Explosive Welded Mg/Al Bimetallic Bars
Theoretical and Experimental Analysis of Formability of Explosive Welded Mg/Al Bimetallic Bars Open
The paper has presented the results of theoretical studies and experimental tests of the plastic deformation of Mg/Al bimetallic specimens. Theoretical studies were carried out using the Forge2011® computer program. Physical modeling, on t…
View article: FE and physical modelling of plastic deformation the two-layer Mg/Al materials
FE and physical modelling of plastic deformation the two-layer Mg/Al materials Open
The paper has presented the results of theoretical studies and experimental tests of the plastic deformation of two-layered Mg/Al specimens. Theoretical studies were carried out using the Forge2011® computer program. Physical modeling, on …