کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7171506 1463712 2018 36 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon: Effects of dynamic strain aging and dynamic precipitation
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon: Effects of dynamic strain aging and dynamic precipitation
چکیده انگلیسی
Tension tests at different temperatures were conducted for two ferritic steels: Fe-0.017C with 0.017% solute carbon content and interstitial-free (IF) steels. It is verified the occurrence of dynamic strain aging (DSA) in Fe-0.017C at high temperatures. Tension tests for the Fe-0.017C, following corresponding heating treatments, demonstrated the transition process of dynamic precipitation from under-aging to over-aging. Moreover, the threshold stress intensity factor ranges (ΔKth) of a small crack for these two steels both decrease with temperature growth. However, the ΔKth of Fe-0.017C was always larger than that of IF steel owing to solid solution hardening and DSA at 293 and 333 K and roughness-induced crack closure and precipitation hardening at 433 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 110, May 2018, Pages 1-9
نویسندگان
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