Abstract: A model of pore or other second phase inhibited grain growth has been developed based on shape independent stereologically measurable parameters such as pore surface area and the degree of pore-grain boundary contact. The model prediction of a linear relationship between pore surface area and the inverse of the grain size was observed experimentally with sintered copper, tungsten, Al[sub 2]O[sub 3] and UO[sub 2]. The model also quantifies the conditions for pore controlled grain growth and pore separation in terms of the pore and grain boundary mobilities and grain boundary curvature and provides a means for quantifying pore mobility from grain growth studies on porous and dense materials.
Publication Year: 1993
Publication Date: 1993-09-01
Language: en
Type: article
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