Dislocation Bow-Out Model for Yield Stress of Ultra-Fine Grained Materials
نویسندگان
چکیده
منابع مشابه
Dislocation Bow-Out Model for Yield Stress of Ultra-Fine Grained Materials
A dislocation bow-out model has been developed to explain the strength of ultra-fine grained (UFG) materials with grain size roughly between 20 nm to 500 nm. In the model, perfect dislocations are assumed to be nucleated at grain-boundary sources and bow out between two pinning points on a boundary. Yielding is considered to occur when a dislocation takes a semi-circular shape under applied str...
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ژورنال
عنوان ژورنال: MATERIALS TRANSACTIONS
سال: 2008
ISSN: 1345-9678,1347-5320
DOI: 10.2320/matertrans.mra2008012