کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7963461 1514147 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An investigation on high temperature fatigue properties of tempered nuclear-grade deposited weld metals
ترجمه فارسی عنوان
تحقیق در مورد خواص خستگی بالا درجه حرارت فلزات جوش داده شده در هسته درجه حرارت
کلمات کلیدی
فلز جوش داده شده، خستگی، درجه حرارت بالا، خستگی چرخه کم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
چکیده انگلیسی
Effect of tempering on low cycle fatigue (LCF) behaviors of nuclear-grade deposited weld metal was investigated, and The LCF tests were performed at 350 °C with strain amplitudes ranging from 0.2% to 0.6%. The results showed that at a low strain amplitude, deposited weld metal tempered for 1 h had a high fatigue resistance due to high yield strength, while at a high strain amplitude, the one tempered for 24 h had a superior fatigue resistance due to high ductility. Deposited weld metal tempered for 1 h exhibited cyclic hardening at the tested strain amplitudes. Deposited weld metal tempered for 24 h exhibited cyclic hardening at a low strain amplitude but cyclic softening at a high strain amplitude. Existence and decomposition of martensite-austenite (M-A) islands as well as dislocations activities contributed to fatigue property discrepancy among the two tempered deposited weld metal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 499, February 2018, Pages 317-325
نویسندگان
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