کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7167846 | 1462944 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of in-service stress and strain fields on the hydrogen embrittlement of the pressure vessel constituent materials in a pressurized water reactor
ترجمه فارسی عنوان
نقش استرس در کار و زمینه های کرنش بر تر و تمیز هیدروژن مواد تشکیل دهنده فشار در یک راکتور آب تحت فشار
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کلمات کلیدی
WWERLWRNPPRPVBWRnuclear reactor pressure vesselEACPWRVVER - vvereHydrogen embrittlement - تردی هیدروژنیEnvironmentally assisted cracking - ترک خوردگی کمک می کندHydrogen solubility - حلالیت هیدروژنBoiling water reactor - رآکتور آب جوشLight water reactor - رآکتور آب سبکPressurized Water Reactor - راکتور آب تحت فشارHydrogen flux - شار هیدروژنHydrogen concentration - غلظت هیدروژنReactor pressure vessel - مخزن مخزن راکتورnuclear power plant - نیروگاه هستهایone-dimensional - یک بعدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
The in-service brittle fracture of a structural component of a nuclear power plant (NPP) is a problem of major concern in engineering. During nuclear energy generation, the wall of the nuclear reactor pressure vessel (RPV) is exposed to a hydrogenating environment leading to a fracture phenomenon known as hydrogen embrittlement (HE). This in-service failure is ruled by hydrogen diffusion from the hydrogenating source (the inner side of the RPV) towards certain places inside the vessel where hydrogen is accumulated and microstructural damage is located. The diffusion process is highly influenced by the stress and plastic strain distributions. For achieving a realistic estimation of the hydrogen accumulation by diffusion, both the in-service thermal stress and the manufacturing induced residual stress and strain (due to tempering heat treatment) must be taken into account. In this paper, a numerical analysis of the hydrogen diffusion assisted by stress and strain is carried out to find out the hydrogen accumulation within the wall of a real pressurized water reactor (PWR) for diverse heat treatment conditions. Results reveal the key role of the in-service thermal stress which enhances the hydrogen diffusion through the constituents' materials of a PWR pressure vessel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 82, December 2017, Pages 458-465
Journal: Engineering Failure Analysis - Volume 82, December 2017, Pages 458-465
نویسندگان
J. Toribio, D. Vergara, M. Lorenzo,