کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5015187 1463725 2017 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Damage mechanisms in silicon-molybdenum cast irons subjected to thermo-mechanical fatigue
ترجمه فارسی عنوان
مکانیسم آسیب رسان در بازیگران آهن سیلیکن مولیبدن تحت خستگی حرارتی مکانیکی است
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
The damage mechanisms active in silicon-molybdenum cast irons, namely EN-GJS-SiMo5-1 and SiMo1000, under thermo-mechanical fatigue and combined thermo-mechanical and high-cycle fatigue conditions have been investigated. The studied load conditions are those experienced at critical locations in exhaust manifolds of heavy-vehicle diesel engines, namely a temperature cycle of 300-750 °C with varied total mechanical and high-cycle fatigue strain ranges. It is established that oxide intrusions are formed in the early life from which macroscopic fatigue cracks are initiated close to the end-of-life. However, when high-cycle fatigue loading is superimposed, small cracks are preferentially initiated at graphite nodules within the bulk. In addition, it is found that both the oxidation growth rate and casting defects located near the surface affect the intrusion growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 99, Part 2, June 2017, Pages 258-265
نویسندگان
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