Cleavage resistance of fine-structured materials |
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| Authors: | Y Qiao X Kong |
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| Affiliation: | (1) Department of Civil Engineering, University of Akron, 44325-3905 Akron, Ohio, USA |
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| Abstract: | Based on a previous bicrystal fracture experiment, the resistance offered by a narrow high-angle grain boundary to cleavage
cracking is analyzed theoretically. It is predicted that, when the grain boundary width is smaller than the distance between
break-through points, the grain boundary toughness will be highly dependent on the characteristic microstructure length. Analytical
expressions are obtained for freestanding thin films and fine-grained materials. |
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| Keywords: | cleavage cracking grain boundary toughness |
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