| Microstructural Effects in Superplastic Deformation |
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| 作者姓名： | Zhou Shanyou |
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| 作者单位： | Shanghai Jiao Tong University，Shanghai 200030，P.R.China |
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| 摘 要： | TheresultsofrecentChineseinvestigationsonmicrostructuralaspectsofsuperplasticdeformationarereviewed.Attentionisgiventograingro-wth,precipitate-freezoneformation,grainboundaryslidingandmigration,anddislocation(bothintragranulardislocationandgrainboundarydisloca-tion)activity.Inthefinalpartofthearticle,anewmodelofmicrograinsuperplasticdeformationbasedonthemovementofgrainboundarydisloca-tionsandinvolvingbothgrainboundaryslidinganddiffusionisdescribed.Thepredictionsofthemodelarecomparedwiththedataexperimentallydetermined.
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Microstructural Effects in Superplastic Deformation |
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| Zhou Shanyou.Microstructural Effects in Superplastic Deformation[J].Shanghai Nonferrous Metals,1993(4). |
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| Authors: | Zhou Shanyou |
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| Abstract: | The results of recent Chinese investigations on microstructural aspects of superplastic deformation are reviewed.Attention is given to grain gro- wth,precipitate-free zone formation,grain boundary sliding and migration, and dislocation(both intragranular dislocation and grain boundary disloca- tion)activity.In the final part of the article,a new model of micrograin superplastic deformation based on the movement of grain boundary disloca- tions and involving both grain boundary sliding and diffusion is described. The predictions of the model are compared with the data experimentally determined. |
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| Keywords: | Superplastic deformation Microstructural effect Grainboundary sliding Dislocation activity |
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