Grain growth inhibition by porosity

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Acta Metallurgica et Materialia; (United States)

OSTI ID:6303033

Lui, Y; Patterson, B R ^[1]

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1. Univ. of Alabama, Birmingham, AL (United States). Dept. of Materials Science and Engineering

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.

• OSTI ID: 6303033
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 41:9; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ACTINIDE COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COPPER
DATA
ELEMENTS
EVALUATION
GRAIN BOUNDARIES
GRAIN GROWTH
GRAIN SIZE
INFORMATION
MATHEMATICAL MODELS
METALS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
POROSITY
SIZE
TRANSITION ELEMENTS
TUNGSTEN
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES