کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7963313 | 1514143 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dislocation loops in ultra-high purity Fe(Cr) alloys after 7.2â¯MeV proton irradiation
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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چکیده انگلیسی
Ultra-high purity Fe(Cr) alloys (from 0â¯wt% Cr to 14â¯wt% Cr) were 3D homogeneously irradiated by 0-7.2â¯MeV protons to 0.3 dpa at nominal temperatures from 270â¯Â°C to 500â¯Â°C. Microstructural changes were observed by transmission electron microscopy (TEM). The results showed that evolution of dislocation loops depends on the Cr content. Below 300â¯Â°C, large ½ a0 <111> loops are dominating. Above 300â¯Â°C, a0 <100> loops with a habit plane {100} appear. Loop sizes of both types are more or less the same. At temperatures from 310â¯Â°C to 400â¯Â°C, a0 <100> loops form clusters with the same {100} habit plane as the one of the loops forming them. This indicates that <100> loops of the same variant start gliding under mutual elastic interaction. At 500â¯Â°C, dislocation loops form disc shaped clusters about 1000â¯nm in diameter and sitting on {111} and/or {100} planes in the pure Fe samples. Based on these observations a quantitative analysis of the dislocation loops configurations and their temperature dependence is made, leading to an understanding of the basic mechanisms of formation of these loops.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 503, May 2018, Pages 81-90
Journal: Journal of Nuclear Materials - Volume 503, May 2018, Pages 81-90
نویسندگان
J. Chen, F. Duval, P. Jung, R. Schäublin, N. Gao, M.F. Barthe,