کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770251 1463090 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fatigue crack growth rate of two pearlitic rail steels
ترجمه فارسی عنوان
نرخ رشد تراکم خستگی دو فولاد ریلی پرلیت
کلمات کلیدی
رشد ترک خستگی، فولاد پرلیتی فولاد، آستانه خستگی، شکستگی شکاف فاصله بین فاصله
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Two types of rail steels in two different orientations were studied.
• Complete crack growth curves of two rail steels were obtained.
• Correlations between the interlamellar spacing and the mechanical properties of the pearlitic steels were studied.
• The Paris–Erdogan Law coefficients (m and C) were estimated.
• The values of the fatigue crack growth threshold (ΔKth) and the plane-strain fracture toughness (KIc) were obtained.

A study of fatigue crack growth rate was conducted in two pearlitic rail steels, namely R260 and R370CrHT. Two crack plane orientations with respect to the rolling direction were tested and separate experiments were performed to cover a wide variation in fatigue crack growth, from the fatigue threshold (circa 10−9 m/cycle) to rapid fracture conditions. The fracture surfaces were examined and some correlations between microstructural features such as interlamellar spacing and mechanical properties were made.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 138, April 2015, Pages 63–72
نویسندگان
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