کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5477944 | 1399248 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the effect of temperature on the threshold stress intensity factor of delayed hydride cracking in light water reactor fuel cladding
ترجمه فارسی عنوان
در اثر دما بر آستانه تنش آستانه ترک خوردگی هیدرولیز تاخیر در روکش فلزی راکتور سوخت نور
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کلمات کلیدی
ترک خوردگی هیدریدهای عقب افتاده، تمامیت خنک کننده سوخت، پین بارگذاری تست، فاکتور شدت تنش تنش، زری 4،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
چکیده انگلیسی
Delayed hydride cracking (DHC) was first observed in pressure tubes in Canadian CANDU reactors. In light water reactors, DHC was not observed until the late 1990s in high-burnup boiling water reactor (BWR) fuel cladding. In recent years, the focus on DHC has resurfaced in light of the increased interest in the cladding integrity during interim conditions. In principle, all spent fuel in the wet pools has sufficient hydrogen content for DHC to operate below 300°C. It is therefore of importance to establish the critical parameters for DHC to operate. This work studies the threshold stress intensity factor (KIH) to initiate DHC as a function of temperature in Zry-4 for temperatures between 227°C and 315°C. The experimental technique used in this study was the pin-loading testing technique. To determine the KIH, an unloading method was used where the load was successively reduced in a stepwise manner until no cracking was observed during 24 hours. The results showed that there was moderate temperature behavior at lower temperatures. Around 300°C, there was a sharp increase in KIH indicating the upper temperature limit for DHC. The value for KIH at 227°C was determined to be 2.6 ± 0.3 MPa âm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Engineering and Technology - Volume 49, Issue 4, June 2017, Pages 663-667
Journal: Nuclear Engineering and Technology - Volume 49, Issue 4, June 2017, Pages 663-667
نویسندگان
Anna-Maria Alvarez Holston, Johan Stjärnsäter,