کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7972868 1514622 2018 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature dependent cyclic mechanical properties of a hot work steel after time and temperature dependent softening
ترجمه فارسی عنوان
درجه حرارت وابسته به خواص مکانیکی چرخه یک فولاد گرم پس از تمیز کردن زمان و دما است
کلمات کلیدی
نرم کننده حرارتی رسیدن اوستوالد، فولاد ابزار کار داغ، سخت شدن ذرات، رابطه رامبرگ-اسگود،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی
In this paper, the temperature dependent cyclic mechanical properties of the martensitic hot work tool steel 1.2367 after tempering are investigated. To this end, hardness measurements as well as monotonic and cyclic tests at temperatures in the range from room temperature to 650 °C are performed on material tempered for different tempering times and temperatures. To describe the observed time and temperature dependent softening during tempering a kinetic model for the evolution of the mean size of secondary carbides based on Ostwald ripening is developed. Furthermore, mechanism-based as well as phenomenological relations for the cyclic mechanical properties of the Ramberg-Osgood model depending on carbide size and temperature are introduced. A good overall agreement of the measured and the calculated stress-strain hysteresis loops for different temperatures and heat treatments is obtained using the determined material properties of the kinetic and mechanical model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 721, 4 April 2018, Pages 96-102
نویسندگان
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