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CZASOPISMA AGH (CN)

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Czasopisma publikowane przez AGH

Kolekcje aktualnych i archiwalnych tytułów czasopism publikowanych przez Akademię Górniczo Hutniczą, w tym zwłaszcza przez Wydawnictwa AGH.

Zobacz także: Czasopisma AGH na platformie OJS

CZASOPISMA NAUKOWE

Computer Methods in Materials Science
Computer Science
Decision Making in Manufacturing and Services
Energetyka Rozproszona
Geology, Geophysics & Environment
Geomatics and Environmental Engineering
Geotourism / Geoturystyka
Journal of Casting & Materials Engineering
Journal of Geotechnology and Energy
Managerial Economics
Mining - Informatics, Automation and Electrical Engineering
Opuscula Mathematica
Studia Humanistyczne AGH
TYTUŁY ARCHIWALNE

POZOSTAŁE CZASOPISMA

Biuletyn AGH

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Now showing 1 - 10 of 9794
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    Item type:Journal Issue,
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    Biuletyn AGH : magazyn informacyjny Akademii Górniczo-Hutniczej
    2026 - Nr 219-220 (czerwiec-lipiec)
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    Journal of Geotechnology and Energy
    2026 - Vol. 43 - No. 1
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    Item type:Article, Access status: Open Access ,
    Study of the effectiveness of restoring the permeability of near-borehole zones
    (Wydawnictwa AGH, 2026) Bystrai, Artur
    When drilling into a reservoir zone, the main goal is to reach the reservoir without damaging the pore space. Damage to the pores can happen because of the drilling mud. Drilling mud, especially when it has solid particles and clay, can block the pores near the wellbore, which is called formation damage. To avoid this, drilling fluids often contain bridging agents, usually finely ground carbonate rocks. These small particles move into the pore spaces of the reservoir zone. While drilling through the productive layer, they protect it from the further invasion of drilling mud and its filtrate. After the drilling is finished, the area where the bridging agents entered the formation is cleaned with hydrochloric acid ($HCl$). The acid reacts with the carbonate ($CaCO_{3}$), dissolving the blocking material. This process restores the permeability of the reservoir zone and allows hydrocarbons to flow freely into the well. The aim of this work is to explain the theoretical background of this topic and to perform laboratory tests that confirm the effectiveness of this process.
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    Item type:Article, Access status: Open Access ,
    Microstructure-erosion resistance correlation in high chromium cast iron: a digital image processing approach
    (AGH University Press, 2026) Vezzania, Ottavia; Fortinia, Annalisa; Gragnaninia, Michele; Sumana, Alessio; Zanini, Nicola
    High chromium cast irons (HCCIs) are widely employed as wear-resistant hardfacing materials in industrial applications where solid particle erosion (SPE) represents a primary degradation mechanism, such as in energy production, mining, and cement manufacturing. The erosive wear resistance of these alloys is strongly dependent on the microstructural features of the primary $M_{7}C_{3}$ carbides, particularly their size, morphology, and spatial distribution within the metallic matrix. The quantitative relationship between carbide distribution homogeneity and erosion resistance has received limited attention in the literature. This study investigates the erosive wear resistance of a Fe-Cr-C cast iron hardfacing alloy and proposes three digital image processing methods to quantitatively characterise the carbide microstructure and correlate it with experimental erosion test results. Optical microscopy combined with image binarisation was used to segment primary $M_{7}C_{3}$ carbides. Three methods were adopted: carbide volume fraction (CVF), minimum inter-carbide distances, and a moving scanning area approach. Erosion tests were conducted according to ASTM G76 guidelines using two Arizona road dust powder grades with two mean diameters under equal kinetic energy conditions. Results show that the erosion rate decreases significantly with the increasing erodent particle size and that carbide distribution homogeneity plays a critical role in determining the erosion resistance. The moving scanning area method proved particularly effective at correlating microstructural coverage with experimental erosion rates.
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    Item type:Article, Access status: Open Access ,
    Comparison of component properties between HPDC and rheocasting applying the RheoMetal$^{TM}$ process
    (AGH University Press, 2026) Cziegler, Andreas
    Since the 1970s, there has been increasing interest in semi-solid processes, allowing improved mould filling with lower gas porosity and lower melt temperatures with improved tool life compared to the standard HPDC process. Challenges lie in the process know-how and the precise temperature control to ensure process stability and reproducibility. In contrast to other semi-solid processes, the RheoMetal$^{TM}$ process achieves the semi-solid state by stirring in an enthalpy exchange material (EEM). This work compares component properties (engine mount) produced by standard HPDC and rheocasting, applying the RheoMetal$^{TM}$ process using an AlSi7MnMg alloy. The results of component testing and radioscopic examination reveal promising outcomes regarding process stability, pore formation, and component properties compared to the standard HPDC process.
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    Item type:Journal Issue,
    Journal of Casting & Materials Engineering
    2026 - Vol. 10 - No. 2
Prawa dostępu

W uzgodnieniu z Wydawnictwami AGH od 1 marca 2011 r. pełne teksty artykułów zamieszczanych na łamach czasopism elektronicznych wydawanych w AGH dostępne są w sieciach rozległych bez żadnych ograniczeń.

Dostęp: otwarty
Licencja: CC BY 4.0 (Uznanie autorstwa 4.0 Międzynarodowe)