کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1582549 1514871 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on hot deformation behavior of 12%Cr ultra-super-critical rotor steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Study on hot deformation behavior of 12%Cr ultra-super-critical rotor steel
چکیده انگلیسی

The hot deformation behavior of a 12%Cr ultra-super-critical rotor steel was investigated through compression test using Gleeble-3500 thermal–mechanical simulator within the temperature range of 1173–1473 K and the strain rate range of 0.01–10 s−1, and the corresponding flow curves were determined. The results showed that the flow stress and the peak strain increase with the drop in the deformation temperature and the rise in the strain rate. The critical Z value, below which the complete dynamic recrystallization may occur, is 3.53 × 1017. The hot deformation activation energy of the steel is 439 kJ/mol, and the hot deformation equation isε˙=1.773×1015[sinh(ασp)]4.420 exp−439,000RT.For the convenience of the practical application, the regressed peak stress can be described asσp=16.7 ln ε˙+881,802T−507.3.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 487, Issues 1–2, 25 July 2008, Pages 108–113
نویسندگان
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