Year 2018, Volume 39, Issue 1, Pages 16 - 22 2018-03-16

Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect
Tek Eksenli Stres Etkisi Altında Demir Çatlak Kusurları Kararlılığı

Mosab Jaser BANISALMAN [1] , Takuji ODA [2]

162 229

Understanding of defect kinetics under stress fields is important for multiscale modeling of nuclear materials degradation. By means of molecular dynamics (MD) simulation, the formation and migration energies were evaluated for self-interstitial atom (SIA) and SIA clusters (1~3 interstitials) in alpha Fe. Effects of 0~3% uniaxial tensile [100] strains were tested for SIAs of <110> and <111> dumbbell configurations. Regarding the stability, the <111> dumbbell configurations becomes more stabilized at larger strains and larger clusters. For the mobility, the diffusion of single SIA defects under tensile stresses were traced. Under the free-strain condition, the diffusivity of the SIA clusters has a gradual transition from three dimensional (3D) to one dimensional (1D) at saturated strain. The 1D transition was observed for large clusters and large strain while the 3D transition was for small clusters and lower strains and presented mainly for the <110> SIA alignment configuration. Under the tensile stress and for small clusters, diffusivity enhancement is bigger at a higher temperature. However, the temperature effect was small for larger clusters. These effects of strain fields can be explained by elastic interaction between defects and applied stress fields.

Stres alanlarındaki kusur kinetiğinin anlaşılması, nükleer maddelerin bozulmasının çok boyutlu modellenmesi için önemlidir. Moleküler dinamik (MD) simülasyonu ile, formasyon ve göç enerjisi enerjileri, alfa Fe'de kendiliğinden oluşan atom (SIA) ve SIA kümeleri (1 ~ 3 geçiş reklamları) için değerlendirilmiştir. % 0 ~ 3 tek eksenli sürdürülebilir [100] gerilme etkileri <110> SIAs ve <111> halter konfigürasyonları için test edilmiştir. Kararlılık ile ilgili olarak, <111> halter konfigürasyonları daha büyük suşlarda ve daha büyük kümelerde daha kararlı hale gelir. Hareketlilik için, sürdürülebilir gerilmeler altında tek SIA kusurlarının difüzyonu izlenmiştir. Serbest gerilme koşullarında, SIA kümelerinin difüzivitesi, doymuş gerilmede üç boyutlu (3D) ile bir boyutlu (1D) aşamalı bir geçişe sahiptir. 3D geçiş küçük kümeler ve alt gerilmeler için iken ve büyük ölçüde <110> SIA hizalama konfigürasyonu için sunulurken, 1D geçişi büyük kümeler ve büyük gerginlik için gözlenmiştir. Çekme gerilmesi altında ve küçük kümeler için, difüzyon artırımı daha yüksek bir sıcaklıkta daha büyüktür. Bununla birlikte, sıcaklık etkisi daha büyük kümeler için küçüktür. Gerinim alanlarının bu etkileri, kusurlar ve uygulanan stres alanları arasındaki elastik etkileşim ile açıklanabilir.

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Primary Language en
Subjects Basic Sciences
Journal Section Natural Sciences
Authors

Author: Mosab Jaser BANISALMAN (Primary Author)
Institution: Seoul National University
Country: South Korea


Author: Takuji ODA
Country: South Korea


Bibtex @conference paper { csj359753, journal = {Cumhuriyet Science Journal}, issn = {2587-2680}, eissn = {2587-246X}, address = {Cumhuriyet University}, year = {2018}, volume = {39}, pages = {16 - 22}, doi = {10.17776/csj.359753}, title = {Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect}, key = {cite}, author = {BANISALMAN, Mosab Jaser and ODA, Takuji} }
APA BANISALMAN, M , ODA, T . (2018). Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect. Cumhuriyet Science Journal, 39 (1), 16-22. DOI: 10.17776/csj.359753
MLA BANISALMAN, M , ODA, T . "Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect". Cumhuriyet Science Journal 39 (2018): 16-22 <http://dergipark.org.tr/csj/issue/36110/359753>
Chicago BANISALMAN, M , ODA, T . "Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect". Cumhuriyet Science Journal 39 (2018): 16-22
RIS TY - JOUR T1 - Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect AU - Mosab Jaser BANISALMAN , Takuji ODA Y1 - 2018 PY - 2018 N1 - doi: 10.17776/csj.359753 DO - 10.17776/csj.359753 T2 - Cumhuriyet Science Journal JF - Journal JO - JOR SP - 16 EP - 22 VL - 39 IS - 1 SN - 2587-2680-2587-246X M3 - doi: 10.17776/csj.359753 UR - https://doi.org/10.17776/csj.359753 Y2 - 2018 ER -
EndNote %0 Cumhuriyet Science Journal Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect %A Mosab Jaser BANISALMAN , Takuji ODA %T Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect %D 2018 %J Cumhuriyet Science Journal %P 2587-2680-2587-246X %V 39 %N 1 %R doi: 10.17776/csj.359753 %U 10.17776/csj.359753
ISNAD BANISALMAN, Mosab Jaser , ODA, Takuji . "Iron Interstitial Defects Stability: Under the Uniaxial Stress Effect". Cumhuriyet Science Journal 39 / 1 (March 2018): 16-22. https://doi.org/10.17776/csj.359753