TEM studies of dislocation substructure in 316 austenitic stainless steel strained after annealing in various environments

Witold Zieliński , Ayad A. Abduluyahed , Krzysztof Kurzydłowski

Abstract

Results of transmission electron microscopy investigations of specimens annealed in either air or vacuum at 600°C and strained to a total elongation of 0.5\% at room temperature are presented. A macroscopically nonuniform spatial distribution of dislocations has been revealed. The dislocation density appears to be larger in the vicinity of the surface of the deformed specimens which indicates a higher work hardening rate near the scale–matrix interface. The dislocation density is also nonuniform along a plane parallel to the interface. In this case, however, the variations in the dislocation density seem to be random. The higher values of the flow stress determined in the vacuum-annealed specimens may be attributed to the higher strength of the oxide scale developed in such conditions of annealing (low pressure of the oxygen).
Author Witold Zieliński
Witold Zieliński,,
-
, Ayad A. Abduluyahed
Ayad A. Abduluyahed,,
-
, Krzysztof Kurzydłowski ZPM
Krzysztof Kurzydłowski,,
- Division of Materials Design
Journal seriesMaterials Science and Engineering A-Structural Materials Properties Microstructure And Processing, ISSN 0921-5093
Issue year1998
Vol249
No1–2
Pages91-96
Keywords in EnglishAustenitic stainless steel, Dislocation structure, Environmental effect, Oxide scale
DOIDOI:10.1016/S0921-5093(98)00578-4
URL http://www.sciencedirect.com/science/article/pii/S0921509398005784
Score (nominal)30
Publication indicators WoS Impact Factor: 2006 = 1.49 (2) - 2007=1.931 (5)
Citation count*11 (2015-04-27)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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