کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7964162 | 1514169 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ratcheting fatigue behavior of Zircaloy-2 at room temperature
ترجمه فارسی عنوان
رفتار خستگی زلزله زکیالوی-2 در دمای اتاق
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
چکیده انگلیسی
Nuclear core components of zirconium alloys experience asymmetric stress or strain cycling during service which leads to plastic strain accumulation and drastic reduction in fatigue life as well as dimensional instability of the component. Variables like loading rate, mean stress, and stress amplitude affect the influence of asymmetric loading. In the present investigation asymmetric stress controlled fatigue tests were conducted with mean stress from 80 to 150Â MPa, stress amplitude from 270 to 340Â MPa and stress rate from 30 to 750Â MPa/s to study the process of plastic strain accumulation and its effect on fatigue life of Zircaloy-2 at room temperature. It was observed that with increase in mean stress and stress amplitude accumulation of ratcheting strain was increased and fatigue life was reduced. However, increase in stress rate led to improvement in fatigue life due to less accumulation of ratcheting strain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 477, 15 August 2016, Pages 67-76
Journal: Journal of Nuclear Materials - Volume 477, 15 August 2016, Pages 67-76
نویسندگان
R.S. Rajpurohit, G. Sudhakar Rao, K. Chattopadhyay, N.C. Santhi Srinivas, Vakil Singh,