کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1622878 | 1516403 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hot working characteristics and dynamic recrystallization of delta-processed superalloy 718
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Hot working characteristics and microstructural mechanisms of delta-processed superalloy 718 at various temperatures and strain rates were studied using the processing maps. The results show that there are two domains of dynamic recrystallization (DRX) exhibited in the map: one occurring around 1050 °C and 0.001 s−1 with a peak efficiency of 54%, and the other at 1000 °C and 0.01 s−1 with a peak efficiency of 46%. The behavior of the pre-precipitated δ phases during hot working has a great effect on the DRX of delta-processed superalloy 718. The flow instability at the strain rates higher than 0.4 s−1 is suggested to be associated with the inconsistent deformation due to the existence of the undissolved short needle-shaped δ phases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 474, Issues 1–2, 17 April 2009, Pages 341–346
Journal: Journal of Alloys and Compounds - Volume 474, Issues 1–2, 17 April 2009, Pages 341–346
نویسندگان
Y. Wang, L. Zhen, W.Z. Shao, L. Yang, X.M. Zhang,