کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9796328 1514945 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of a heterogeneous distribution of particles on the formation of banded grain structure in wrought Alloy 718
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effect of a heterogeneous distribution of particles on the formation of banded grain structure in wrought Alloy 718
چکیده انگلیسی
Alloy 718 is known to be sensitive to interdendritic segregation formed during ingot solidification. The occurrence of banded grain structures under heat treating conditions close to 1000 ° C related to interdendritic segregation is often reported. In order to have a better understanding of this microstructural evolution, an extensive experimental program has been carried out. Consequently, a model taking into account the selective dissolution of δ-phase (Ni3Nb) is proposed. A grain growth simulation by Monte-Carlo method is then used to illustrate the grain structure evolution in a banded particle distribution. By comparing experimental data and computer simulation, the relationship between the Monte-Carlo step and the real time is assessed and the range of parameters when heterogeneous microstructures appear is specified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 396, Issues 1–2, 15 April 2005, Pages 92-98
نویسندگان
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