کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9795587 | 1514931 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of dendrite branching and growth kinetics in the formation of low angle boundaries in Ni-base superalloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Role of dendrite branching and growth kinetics in the formation of low angle boundaries in Ni-base superalloys Role of dendrite branching and growth kinetics in the formation of low angle boundaries in Ni-base superalloys](/preview/png/9795587.png)
چکیده انگلیسی
An experimental study coupled with a local thermal undercooling model has been used to discriminate between possible contributions to the evolution of misorientation producing low angle grain boundaries during solidification in the Ni-base superalloys, CMSX4 and CMSX10N; these include: (a) successive dendrite branching, (b) dendrite bending during steady state growth and (c) thermal-undercooling driven transient dendrite growth kinetics. While extensive dendrite branching/steady state growth led to an average spread of misorientation â2.3° and was random in nature, enhanced growth kinetics accompanying non-steady state conditions produced an accumulated misorientation up to 6°; the latter was suggested to potentially include plastic deformation of the dendrite stems within the mushy zone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 412, Issues 1â2, 5 December 2005, Pages 307-315
Journal: Materials Science and Engineering: A - Volume 412, Issues 1â2, 5 December 2005, Pages 307-315
نویسندگان
M. Newell, K. Devendra, P.A. Jennings, N. D'Souza,