On the origin of deformation microstructures in austenitic stainless steel: part I—microstructures
| Autor: | K. Farrell, Thak Sang Byun, M. H. Yoo, John D. Hunn, Eal H. Lee, Louis K. Mansur |
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| Rok vydání: | 2001 |
| Předmět: |
Materials science
Polymers and Plastics Composite number Metallurgy Metals and Alloys Stacking Slip (materials science) engineering.material Microstructure Electronic Optical and Magnetic Materials Transmission electron microscopy Ceramics and Composites engineering Partial dislocations Dislocation Austenitic stainless steel |
| Zdroj: | Acta Materialia. 49:3269-3276 |
| ISSN: | 1359-6454 |
| DOI: | 10.1016/s1359-6454(01)00193-8 |
| Popis: | A comprehensive characterization of room temperature deformation microstructures was carried out by transmission electron microscopy for ion irradiated and deformed AISI 316LN austenitic stainless steel. Deformation microstructures were produced by a recently developed disk-bend test method and also by a uniaxial tensile test. Cross-slip was dramatically suppressed by the radiation-induced defects and slip occurred predominantly by planar glide of Shockley partial dislocations. Deformed microstructures consisted of piled-up dislocations, nanotwin layers, stacking faults, and defect-reduced dislocation channel bands. Analyses revealed that all these features were different manifestations of the same type of deformation band, namely a composite of overlapping faulted layers produced by Shockley partial dislocations. |
| Databáze: | OpenAIRE |
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