کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
778384 1463793 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fatigue behavior of ferritic–pearlitic–bainitic steel in loading with positive mean stress
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Fatigue behavior of ferritic–pearlitic–bainitic steel in loading with positive mean stress
چکیده انگلیسی

The effect of positive mean stress on the fatigue behavior of ferritic–pearlitic–bainitic steel has been studied. Specimens, produced from a massive forging, were cycled with two constant stress amplitudes and various positive mean stresses. Plastic strain amplitude and cyclic creep rate were measured during cyclic loading and the effect of the mean stress on saturated plastic strain amplitude and mean strain at half-life was established. Plastic strain amplitude is weakly dependent but creep strain increases with the mean stress exponentially. Fatigue life decreases with the mean stress for both stress amplitudes. The contributions of cyclic plastic strain and cyclic creep to the fatigue damage were evaluated and discussed in relation with the Manson-Coffin curve.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 39, June 2012, Pages 103–108
نویسندگان
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