Journal ArticleDOI
On the Relationship Between Cyclic Deformation Behavior and Slip Mode in 316LN Stainless Steel with Varying Nitrogen Content
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TLDR
In this paper, the relationship between cyclic deformation, slip-mode and dislocation structures was investigated in 316LN stainless steel (with 0.07-0.22% Nitrogen) subjected to low cycle fatigue at temperatures in the range 300-873 K and at a 0.6% strain amplitude.Abstract:
The relationship between cyclic deformation, slip-mode and dislocation structures is investigated in 316LN stainless steel (with 0.07–0.22 wt% Nitrogen) subjected to low cycle fatigue at temperatures in the range 300–873 K and at a 0.6 % strain amplitude. Irrespective of the nitrogen content, cyclic softening/saturation occupied a large fraction of fatigue life at temperatures <773 K. The end-of-life dislocation structures (e.g. dislocation cells, planar slip-bands) characterizing the cyclic softening/saturation belong to wavy/mixed/planar slip-modes of deformation. On the other hand at temperatures ≥773 K, similar dislocation structures are noticed to be associated with significant cyclic strengthening with limited softening. The differences in the above deformation behavior is found to be controlled not by the nature of slip-mode but by the consequences of dynamic strain aging occurrence (e.g. significant cyclic strengthening and pronounced serrations) which are noticed to vary in the temperature range 573–873 K. Maximum fatigue life is observed at 0.11–0.14 wt% N that induced mixed mode of deformation.read more
Citations
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Journal ArticleDOI
A crucial impact of short-range ordering on the cyclic deformation and damage behavior of face-centered cubic alloys: A case study on Cu-Mn alloys
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Journal ArticleDOI
Thermomechanical fatigue behavior of nitrogen enhanced 316LN stainless steel: Effect of cyclic strain
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Journal ArticleDOI
Thermomechanical fatigue properties and microstructural damage of nitrogen alloyed 316LN stainless steel
TL;DR: In-phase and out-of-phase thermomechanical fatigue (TMF) tests are carried out to investigate the cyclic deformation behavior, microstructural damage and cracking behavior of 316LN stainless steel.
Journal ArticleDOI
Plastic deformation and fracture behaviour of high-nitrogen nickel-free austenitic stainless steel
TL;DR: In this article, the plastic deformation and fracture behavior of a high-nitrogen nickel-free austenitic stainless steel were examined by performing tensile testing at room temperature and at a wide strain rate range.
Dissertation
Deformation mechanisms of metastable stainless steels accessed locally by monotonic and cyclic nanoindentation
TL;DR: In this article, the main deformation mechanisms and their gradual evolution of austenitic stainless steels were investigated by employing controlled deformation of individual austenite grains via monotonic and cyclic nanoindentation.
References
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Journal ArticleDOI
Serrated yielding in AISI 316 stainless steel
TL;DR: In this paper, the effect of prior ageing in the temperature range (823 −1323 K) for different periods of time on the serrated yielding behavior at 923 K was investigated.
Journal ArticleDOI
Low cycle fatigue behaviour in vacuum of a 316L-type austenitic stainless steel between 20 and 600°C—Part II: Dislocation structure evolution and correlation with cyclic behaviour
TL;DR: In this paper, the authors reported the evolutions of the dislocation structures of an austenitic stainless steel cycled in vacuum for different temperatures between 20 and 60°C.
Journal ArticleDOI
Evolution of dislocation structures and cyclic behaviour of a 316L-type austenitic stainless steel cycled in vacuo at room temperature
TL;DR: In this article, a 316L-type austenitic stainless steel has been shown to exhibit a planar slip or a wavy slip character depending on the cyclic plastic strain amplitude.
Journal ArticleDOI
X-ray Absorption Fine Structure Analysis of Interstitial (C, N)-Substitutional (Cr) Complexes in Austenitic Stainless Steels
TL;DR: In this paper, the authors investigated the local atomic environments around chromium atoms in 15Ni-15Cr austenitic steels with separate or combined addition of carbon, nitrogen and silicon.
Journal ArticleDOI
Low Cycle Fatigue Behavior of 316LN Stainless Steel Alloyed with Varying Nitrogen Content. Part I: Cyclic Deformation Behavior
TL;DR: In this paper, the influence of cyclic strain amplitude on the evolution of the cyclic stress-strain response and the associated cyclic deformation mechanisms in 316LN stainless steel with varying nitrogen content was reported in the temperature range 773 K to 873 K (500 −C to 600 −C).