کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1581434 1514860 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphological changes of γ′ precipitates in superalloy IN738LC at various cooling rates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Morphological changes of γ′ precipitates in superalloy IN738LC at various cooling rates
چکیده انگلیسی
The effect of cooling rate from a temperature below the γ′ solvus on morphology of γ′ in a Ni-base superalloy, IN738LC, was investigated. At high cooling rates, γ′ showed solid-state morphological instability and as the cooling rate decreased, γ′ reduced in size and the growth occurred in a stable manner. The morphology changed from a cubic shape to a complex and flower-like shape as the cooling rate increased. The shape changes observed in this study suggested that the cooling rate has a significant impact on the misfit between γ and γ′. The morphological instability of γ′ is believed to be controlled by the degree of supersaturation in the matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 498, Issues 1–2, 20 December 2008, Pages 266-271
نویسندگان
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