Witor Wolf
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View article: On the nature of chemical short-range order evolution
On the nature of chemical short-range order evolution Open
Chemical short-range order (CSRO) refers to the local, non-random arrangement of atoms in solid solutions, where certain chemical pairs are more or less likely as first neighbors than expected from stoichiometry1,2. This subtle deviation f…
View article: Improving the Corrosion Resistance of Titanium by PAA/Chitosan Bilayer Architecture Through the Layer-by-Layer Method
Improving the Corrosion Resistance of Titanium by PAA/Chitosan Bilayer Architecture Through the Layer-by-Layer Method Open
To enhance interaction with the host tissue and protect the metal surface, various surface treatments can be applied to dental implants. This study aimed to produce layer-by-layer (LbL) films by alternated immersion of the titanium sample …
View article: Advances in Enhancing the Wear Performance of Ti-6Al-4V Biomedical Alloy Through Nb2O5 Coating
Advances in Enhancing the Wear Performance of Ti-6Al-4V Biomedical Alloy Through Nb2O5 Coating Open
The Ti-6Al-4V alloy is widely used in orthopedic and dental implants due to its excellent mechanical, corrosion, and biological properties. However, it exhibits several limitations that can compromise its performance in clinical applicatio…
View article: Enhanced dissimilar aluminum alloy joints using 0.1 mm offset in refill friction stir spot welding
Enhanced dissimilar aluminum alloy joints using 0.1 mm offset in refill friction stir spot welding Open
5A06-O and 2219-T87 aluminum alloys are promising candidates for propellant tanks. In this study, refill friction stir spot welding (refill FSSW) with a 0.1 mm offset was applied to produce defect-free 5A06-O/2219-T87 welds. A Box-Behnken …
View article: A comparative investigation of composites obtained by spark plasma sintering under pressure and conventional sintering of an Al-Al62.5Cu25Fe12.5 powder mixture
A comparative investigation of composites obtained by spark plasma sintering under pressure and conventional sintering of an Al-Al62.5Cu25Fe12.5 powder mixture Open
The present work studied the phase composition and microstructural features of composites obtained by spark plasma sintering (SPS) under pressure and conventional (pressureless) sintering of an Al-20 vol.% Al62.5Cu25Fe12.5 (%at.) powder mi…
View article: The Use of Nanosecond Pulsed Fibre Laser Treatment to Improve the Corrosion Resistance of 316L SS Utilised as Surgical Devices
The Use of Nanosecond Pulsed Fibre Laser Treatment to Improve the Corrosion Resistance of 316L SS Utilised as Surgical Devices Open
The nanosecond pulsed fibre laser (NsPFL) treatment is extensively employed to distinguish hospital surgical instruments (micro-surgical forceps, surgical blades, orthopaedic drills, and high-precision laparoscopic tools), which are genera…
View article: Fabrication of Quasicrystalline Scaffolds From the Al-Cu-Fe System by Dynamic Freeze-Casting
Fabrication of Quasicrystalline Scaffolds From the Al-Cu-Fe System by Dynamic Freeze-Casting Open
In this study, scaffolds whose main phase is an icosahedral quasicrystal (i-QC) were prepared for the first time by dynamic freeze-casting. Two different metal powders were used here, namely pure aluminum and quasicrystalline particles fro…
View article: Recent developments on fabrication of Al‐matrix composites reinforced with quasicrystals: From metastable to conventional processing
Recent developments on fabrication of Al‐matrix composites reinforced with quasicrystals: From metastable to conventional processing Open
Quasicrystalline alloys and their composites have been extensively studied due to their complex atomic structures, mechanical properties, and their unique tribological and thermal behaviors. However, technological applications of these mat…
View article: Structural transformations of a gas-atomized Al62.5Cu25Fe12.5 alloy during detonation spraying, spark plasma sintering and hot pressing
Structural transformations of a gas-atomized Al62.5Cu25Fe12.5 alloy during detonation spraying, spark plasma sintering and hot pressing Open
In this work, we traced structural transformations of an Al62.5Cu25Fe12.5 alloy, in which a quasicrystalline icosahedral phase (i-phase) can be formed, upon spraying onto a substrate and consolidation from the powder into the bulk state. T…
View article: Recent developments on fabrication of Al-matrix composites reinforced with quasicrystals: From metastable to conventional processing
Recent developments on fabrication of Al-matrix composites reinforced with quasicrystals: From metastable to conventional processing Open
View article: Formation and stability of complex metallic phases including quasicrystals explored through combinatorial methods
Formation and stability of complex metallic phases including quasicrystals explored through combinatorial methods Open
Aluminum-based quasicrystals typically form across narrow composition ranges within binary to quaternary alloys, which makes their fabrication and characterization challenging. Here, we use combinatorial approaches together with fast chara…
View article: Microstructure and mechanical behavior of Al92Fe3Cr2X3 (X = Ce, Mn, Ti, and V) alloys processed by centrifugal force casting
Microstructure and mechanical behavior of Al92Fe3Cr2X3 (X = Ce, Mn, Ti, and V) alloys processed by centrifugal force casting Open
Microstructural and mechanical characterization of Al92Fe3Cr2X3 (X = Ce, Mn, Ti, and V) alloys were performed. The alloys were processed by a method that uses centrifugal force to cast the samples into a rotating copper mold. Microstructur…
View article: Consolidation of magnesium and magnesium-quasicrystal composites through high‑pressure torsion
Consolidation of magnesium and magnesium-quasicrystal composites through high‑pressure torsion Open
It is of great interest to produce magnesium-based composites through room temperature consolidation of particles using high-pressure torsion. However, the lack of bonding between the particles compromises the integrity and ductility of su…
View article: Microstructural Characterization of a Laser Surface Remelted Cu-Based Shape Memory Alloy
Microstructural Characterization of a Laser Surface Remelted Cu-Based Shape Memory Alloy Open
Cu-based shape memory alloys (SMAs) present some advantages as higher transformation temperatures, lower costs and are easier to process than traditional Ti-based SMAs but they also show some disadvantages as low ductility and higher tende…
View article: Enhancement of Mechanical Properties of Aluminum and 2124 Aluminum Alloy by the Addition of Quasicrystalline Phases
Enhancement of Mechanical Properties of Aluminum and 2124 Aluminum Alloy by the Addition of Quasicrystalline Phases Open
A structural and mechanical characterization of pure aluminum and 2124 T6 aluminum alloy reinforced with quasicrystalline phases of composition Al65Cu20Fe15 and Al70.5Pd21Mn8.5 (%at.) were performed. The quasicrystalline phases were synthe…