کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7983475 1514779 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strain-induced grain evolution in an austenitic stainless steel under warm multiple forging
ترجمه فارسی عنوان
تکامل دانه ناشی از فشار در یک فولاد ضد زنگ آستنیتی تحت چندتایی گرم
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی
The dynamic processes of ultrafine grain evolution in an S304H austenitic stainless were studied in multiple forging tests at temperatures ranging from 500 °C to 700 °C. The multiple forging was accompanied by the development of dynamic recrystallisation (DRX), which resulted in the formation of ultrafine grained structures. The size of the DRX grains decreases from 0.3 μm to 0.1 μm with a decrease in the temperature from 700 °C to 500 °C. The continuous DRX makes the main contributions to the overall recrystallisation process, although the discontinuous DRX plays an important role in the new grain development at moderate to large strains at 700 °C. The variation in the DRX mechanisms results in a change in the DRX kinetics. The fraction of high-angle boundaries can be expressed as FHAB∼0.2 ε in the range of 0<ε<2 for processing at 500-600 °C, whereas FHAB∼0.45 ε was obtained in the range of 1.2<ε<2 at 700 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 564, 1 March 2013, Pages 413-422
نویسندگان
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