A5075007569- Quasicrystal Structures and Properties
- Aluminum Alloy Microstructure Properties
- Microstructure and mechanical properties
- Aluminum Alloys Composites Properties
- Metal Alloys Wear and Properties
- Microstructure and Mechanical Properties of Steels
- Mineralogy and Gemology Studies
- Intermetallics and Advanced Alloy Properties
- Metallurgical and Alloy Processes
- Metallurgy and Material Forming
- High Temperature Alloys and Creep
- X-ray Diffraction in Crystallography
- Advanced materials and composites
- Metallic Glasses and Amorphous Alloys
- Diamond and Carbon-based Materials Research
- Magnetic Properties and Applications
- Advanced Materials Characterization Techniques
- Metal and Thin Film Mechanics
- High Entropy Alloys Studies
- Non-Destructive Testing Techniques
- Magnetic Properties of Alloys
- Magnetic and transport properties of perovskites and related materials
- Magnetic properties of thin films
- Advanced ceramic materials synthesis
- Corrosion Behavior and Inhibition
University of Ljubljana
2015-2024
Centre National de la Recherche Scientifique
2016
Institute of Metals and Technology
2014
Abstract Electrochemical water-splitting is a promising green technology for the production of hydrogen. One bottlenecks, however, oxygen evolution half-reaction (OER), which could be overcome with development suitable electrocatalyst. Recently, non-noble metal, high-entropy oxides (HEO) have been investigated as potential OER electrocatalysts, but complex synthesis approaches that usually produce material in powder form limit their wider utilization. Here, an innovative strategy formulating...
We propose a dominant core-shell formation mechanism for grain-boundary-diffusion-processed (GBDP), Tb-treated, Nd2Fe14B sintered magnets. A depth-sensitive analysis of Tb-treated samples, relative to non-GBDP magnet, showed 30% increase the coercivity in central part magnet. structure-chemistry-magnetic-property revealed GBDP mechanism. On surface Tb is released from starting precursor following cascade chemical reactions between oxide and Nd and/or Nd-Fe-B. The diffuses along grain...
This paper presents the results of an investigation into optimising dimension stone Repen extraction from Debela Griža quarry. Firstly, this was done by parameters Fantini GU.70-R/XC cutting chainsaw; it determined that relatively quick can be achieved using axial force its blade between 40 and 75 N. Secondly, a few fractured unfractured cemented carbide (WC-Co) inserts were metallographically prepared examined under light optical microscope SEM with EDS. Later, samples also etched for...
The present study investigates the effect of shot peening (SP) on mechanical properties and surface roughness 7075 aluminum alloy during different stages conditions heat treatment. were determined by measuring Vickers microhardness profiles residual stress profiles, while amount alloying elements in solid solution samples under treatment was electrical conductivity. results show that increase near SP maximum compressive stresses are mainly related to content solution. Surface increases with...
Summary An Al 86 Mn 3 Be 11 alloy cast into copper mould was subjected to metallographic investigation. The as‐cast microstructure consisted of a quasicrystalline icosahedral phase (i‐phase), 4 AlMn and, occasionally, hexagonal phase. Al‐rich solid solution represented the dominant chemical compositions phases were determined using AES. composition slightly deviated from stoichiometric composition, whereas i‐phase approximately 52 18 30 , containing an appreciable amount Be. average 66 21 13...
Abstract An Al 94 Mn 2 Be Cu cast alloy was developed displaying increased quasicrystalline formation ability at moderate cooling rates. The as-cast microstructure consisted of a mainly icosahedral phase in the Al-matrix. remained stable during uniform heating to 580 °C and isothermal annealing 400 °C. Most preserved even after 24 h 500 For that reason, this presents promising basis for further development Al-alloys containing quasicrystals.
Abstract In this work, an Al‐Mn‐Be‐Cu alloy was prepared by vacuum induction melting and casting. The then remelted gravitationally cast into cylindrical metallic dies with 2 mm, 4 mm 8 diameters in order to obtain the quasicrystalline phase aluminium‐rich matrix. samples height‐to‐thickness ratio of 3:1 were tested using compression test at room temperature. deformation rate 0.001 s –1 . main objective study behaviour during tests information regarding its plastic deformability fracture....
This study confirms that crystalline TiB2 particles can act as a potent site for the heterogeneous nucleation of metastable icosahedral quasicrystalline phase (IQC) formed in cast Al-Mn-Si-Cu-Mg alloys. The results show primary IQC nucleates on facets particles. Electron backscatter diffraction patterns and selected-area electron confirmed at least five orientation relationships (ORs) exist between stable phase. adopts different ORs with crystallineTiB2 to form low energy interfaces by...
Abstract This work studied the phases in Al corner of Al–Mn–Be phase diagram as-cast state and heat-treated conditions. Metallographic investigations, X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy were used for identifying phases. The Be contents identified precisely determined using Auger spectroscopy. results indicated that 6 Mn does not dissolve Be, whilst λ-Al 4 dissolves up to 7 at.% Be. average composition T phase, which is normally designated as 15 3...