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Potuzak, Marcel
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Publications (8/8 displayed)
- 2014Influence of thermal history on micro-mechanical properties of earth-alkaline aluminosilicate glasses
- 2014Irreversibility of pressure induced boron speciation change in glass
- 2013Physical properties of CaAl2Si2O8–CaMgSi2O6–FeO–Fe2O3 melts: Analogues for extra-terrestrial basaltcitations
- 2013Environmental effects on fatigue of alkaline earth aluminosilicate glass with varying fictive temperaturecitations
- 2013Aluminosilicate Glasses for Ion Exchange
- 2012Structure-Property Relationships and the Mixed Network Former Effect in Boroaluminosilicate Glasses
- 2011Universality of the high-temperature viscosity limit of silicate liquidscitations
- 2011Sodium diffusion in boroaluminosilicate glassescitations
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article
Environmental effects on fatigue of alkaline earth aluminosilicate glass with varying fictive temperature
Abstract
The influence of relative humidity on microhardness, stress intensity, crack resistance, and sub-critical crack growth of an alkaline earth aluminosilicate glass has been studied by Vickers indentation. Quenched and annealed glasses with a wide range of fictive temperatures (ΔTf ≈ 130 K) are compared in order to determine the influence of the thermal history on these properties. Vickers hardness is found to be essentially unaffected by the environmental conditions, while the stress intensity factor (fracture toughness) and the crack resistance decrease significantly with increasing humidity. The glasses with lower fictive temperature exhibit a larger change in the micromechanical properties when comparing wet and dry conditions. Finally, it is found that sub-critical crack growth is larger in the low fictive temperature glasses, indicating a diminished resistance against fatigue and stress corrosion.