Colossal grain boundary strengthening in ultrafine nanocrystalline oxides
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DOI: 10.1016/j.matlet.2016.10.035
Abstract: Abstract One of the most classic size-effects in materials is the increase in the strength and hardness as the grain size decreases. However, a practical low size limit for this so-called grain boundary strengthening has… read more here.
Keywords: grain boundary; strengthening ultrafine; boundary strengthening; size ... See more keywords
Additional grain boundary strengthening in length-scale architectured copper with ultrafine and coarse domains
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DOI: 10.1016/j.scriptamat.2019.02.019
Abstract: Abstract The strength of polycrystals is known to increase with decreasing grain size, known as Hall-Petch effect. However, this relationship fails to predict the strength of samples with a non-uniform distribution of grain sizes. In… read more here.
Keywords: grain boundary; length scale; boundary strengthening; strengthening length ... See more keywords
Accessing Colony Boundary Strengthening of Fully Lamellar TiAl Alloys via Micromechanical Modeling
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DOI: 10.3390/ma10080896
Abstract: In this article, we present a strategy to decouple the relative influences of colony, domain and lamella boundary strengthening in fully lamellar titanium aluminide alloys, using a physics-based crystal plasticity modeling strategy. While lamella and… read more here.
Keywords: polysynthetically twinned; colony boundary; fully lamellar; colony ... See more keywords