کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11019998 | 1717616 | 2019 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantitative analysis of withdrawal rate on stray grain formation in the platforms of a Ni-Based single crystal dummy blade
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Quantitative analysis of withdrawal rate on stray grain (SG) formation in the platforms of Ni-base single crystal (SX) dummy blades was carried out through experiments and simulations. The results showed that the tendency of SG formation becomes higher with the increase of withdrawal rates from 3 to 12â¯mmâ¯minâ1. Considering that SG formation is governed by a competition on the amount of time used for the dendrites branching and the cooling process, the underlying mechanism associated with the influence of withdrawal rate on SG formation was then investigated based on the effect of withdrawal rate on the thermal profile development and the macrostructural evolutions. Finite element simulation indicated that the thermal profile in the platform is wave-shaped, which results in two kinds of SGs formation; one being isolated in small areas in the platform ends, and the other connecting to a large area across the upper and lower edges of the platform.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 773, 30 January 2019, Pages 432-442
Journal: Journal of Alloys and Compounds - Volume 773, 30 January 2019, Pages 432-442
نویسندگان
Yafeng Li, Lin Liu, Dejian Sun, Quanzhao Yue, Taiwen Huang, Bin Gan, Jun Zhang, Hengzhi Fu,