60 Years of Hall-Petch: Past to Present Nano-Scale Connections
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- Armstrong Ronald W.
- Center for Energetic Concepts Development, Department of Mechanical Engineering, University of Maryland
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説明
Pioneering research results reported in the early 1950’s by E. O. Hall and N. J. Petch on iron and steel materials have led to an expanded description of the grain size dependence of the complete stress–strain behavior of a wider range of materials and including assessments of other mechanical properties such as the ductile to brittle transition behavior and the hardness of materials, particularly, of nanocrystalline materials. The dislocation pile-up model that was presented originally for the inverse square root of grain diameter dependence of material strength has endured. Most recently, the pile-up model description has been more definitely associated with the Griffith theory of achieving a critical stress concentration at the tip of a crack; and, the Hall-Petch analysis has been connected to the macro-scale description of the fracture mechanics stress intensity parameter. These topics and other “60 years of Hall-Petch” type researches are tracked over time in the present report while giving special emphasis to current order-of-magnitude strength improvements that are reported for metals with nanopolycrystalline grain diameters.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 55 (1), 2-12, 2014
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001204251344000
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- NII論文ID
- 130004825130
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 025173137
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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