Low cycle fatigue behaviors of type 316LN austenitic stainless steel in 310 degrees C deaerated water-fatigue life and dislocation structure development

Cited 29 time in webofscience Cited 0 time in scopus
  • Hit : 821
  • Download : 2785
The low cycle fatigue tests for type 316LN stainless steel were performed in 310 degrees C deaerated water at various strain amplitudes and strain rates. The primary hardening was observed in all test conditions. It was found that the increase of bulk dislocation density and the interaction between mobile dislocations and atoms, which occur under the dynamic strain aging condition, were responsible for the primary hardening. On the other hand, the secondary hardening occurred distinctly for 0.4%/s and 0.4%. For that specific condition, the corduroy contrast resulted from pinned dislocations was observed at the crack tip. The secondary hardening may be associated with the corduroy contrast. The dislocation structure and fatigue surface revealed the characteristic feature of the hydrogen-induced cracking. Thus, we concluded the hydrogen-induced cracking contributed to the reduction in fatigue life and the enhancement of decreasing fatigue life with a decreasing strain rate in 310 degrees C deaerated water. (c) 2007 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2008-03
Language
English
Article Type
Article
Keywords

HYDROGEN; DEFORMATION; 600-DEGREES-C; ENVIRONMENTS; VACUUM

Citation

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.476, no.1-2, pp.248 - 256

ISSN
0921-5093
DOI
10.1016/j.msea.2007.07.023
URI
http://hdl.handle.net/10203/4546
Appears in Collection
NE-Journal Papers(저널논문)
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 29 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0