کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7975856 1514692 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The hot deformation behaviors of coarse, fine and mixed grain for Udimet 720Li superalloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
The hot deformation behaviors of coarse, fine and mixed grain for Udimet 720Li superalloy
چکیده انگلیسی
In this work, the hot deformation behaviors of Udimet 720Li superalloy with the microstructures of coarse grain, fine grain and mixed grain were studied contrastively by means of various microstructural analysis approaches. Based on the experimental results, in single-phase region, dynamic recrystallization (DRX) mainly occurs along the boundaries, while a decrease in the grain size accelerates the DRX kinetics. In two-phase region, the DRX on grain boundaries of coarse grain is limited, but intragranular continuous sub-grain rotation and accumulation takes effect remarkably; no DRX occurs in fine grain, but local migration of grain boundaries and deformation of γ′ independently occur. The coarse-grain and fine-grain portions of mixed grain perform in a similar way of the coarse grain and fine grain respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 651, 10 January 2016, Pages 102-115
نویسندگان
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