Materials Science and Engineering Calendar

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Materials Science and Engineering Colloquium

Event Type
Materials Science and Engineering Department
100 Materials Science and Engineering Building
Dec 3, 2012   4:00 pm  
Michael Demkowicz, Dept. of Materials Science and Engineering, MIT
Originating Calendar
MatSE Seminars

"Healing of nanocracks by disclinations" - I present a mechanism--recently discovered through atomistic modeling--whereby nano-scale cracks in polycrystalline solids undergo complete healing under externally applied tensile and shear loading. This mechanism occurs as a result of stress-induced grain boundary migration and may be explained through the mechanics of disclinations. The opportunity for designing fracture-resistant microstructures based on this mechanism will be discussed.

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