Journal ArticleDOI
Wetting of Stressed Grain Boundaries in Polycrystals and Rheological Behaviour of Resulting Materials
Reads0
Chats0
TLDR
In this paper, the response of the internally wetted polycrystals to static loading has been shown to obey “pressure solution” constitutive laws involving dissolution at stressed surfaces, diffusive transport of dissolved matter and precipitation at less stressed surfaces.Abstract:
Orientational patterns of wetted grain boundaries (GB's) in stressed NaCl polycrystals have been used for describing the GB penetration process on the basis of combined interfacial and mechanical energy balance considerations. The response of the internally wetted polycrystals to static loading has been shown to obey “pressure solution” constitutive laws involving dissolution at stressed surfaces, diffusive transport of dissolved matter and precipitation at less stressed surfaces. Direct experimental evidence for pressure solution mechanism is presented.read more
Citations
More filters
Journal ArticleDOI
Intergranular pressure solution in internally wetted polycrystals: Effect of additives
TL;DR: In this article, the creep experiments were carried out on poly- or monocrystalline sodium chloride in the presence of NaCl aqueous solution (pure or containing additives such as copper, magnesium and lead chlorides, K 4 Fe(CN) 6 and urea) in all cases, pressure solution has been shown to be the main deformation mechanism.
References
More filters
Journal ArticleDOI
Direct Measurements of the Surface Energies of Crystals
TL;DR: In this paper, the surface energies of several simple crystals have been measured at −196°C by means of quantitative cleavage experiments and the measured values of their respective surface energies (ergs/cm2) are: 340, 1200, 450, 280, 230, 1240, and 105.
Journal ArticleDOI
The kinetics of rock deformation by pressure solution
TL;DR: In this paper, a simple model for rock deformation by pressure solution, assuming grain boundary diffusive mass transfer to be deformation rate controlling, is presented, which leads to a constitutive flow law which is of the same form as that for Coble creep.
Journal ArticleDOI
Weakening of rock salt by water during long-term creep.
TL;DR: Experiments indicate that the above discrepancies can be explained by taking into account the influence of trace amounts of brine, which casts substantial doubt on the validity of presently accepted dislocation creep laws for predicting the long-term rheological behaviour of salt in nature.
Journal ArticleDOI
In situ investigation of liquid Ga penetration in Al bicrystal grain boundaries: grain boundary wetting or liquid metal embrittlement?
TL;DR: The phenomenon of grain boundary penetration of liquid Ga along grain boundaries (GB) of Al bicrystals is investigated by synchrotron radiation X-ray microradiography as discussed by the authors.
Journal ArticleDOI
Pressure influence on the grain boundary wetting phase transition in FeSi alloys
Boris B. Straumal,Boris B. Straumal,Eugen Rabkin,Witold Łojkowski,Wolfgang Gust,Lasar S. Shvindlerman +5 more
TL;DR: In this article, the influence of hydrostatic pressure up to 1.4 GPa at 905°C on the wetting of grain boundaries in Fe-6 at.% Si and Fe-12 at.%.