TEM studies of dislocation substructure in 316 austenitic stainless steel strained after annealing in various environments
Witold Zieliński , Ayad A. Abduluyahed , Krzysztof Kurzydłowski
AbstractResults 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).
|Journal series||Materials Science and Engineering A-Structural Materials Properties Microstructure And Processing, ISSN 0921-5093|
|Keywords in English||Austenitic stainless steel, Dislocation structure, Environmental effect, Oxide scale|
|Publication indicators||: 2006 = 1.49 (2) - 2007=1.931 (5)|
|Citation count*||11 (2015-04-27)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.