کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5454900 | 1514360 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Recrystallization of a single crystal Ni-base superalloy in ã011ã and ã111ã orientations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The recrystallization behavior below the γⲠsolvus of a single crystal nickel base superalloy was investigated. Both tension and surface grinding were adopted to introduce the pre-deformation before annealing. The results showed that surface recrystallization of the tensile samples were mainly controlled by the nucleation process which was closely associated with the dislocation density in the matrix channels. Full recrystallization occurring in the deformation bands of fractured ã011ã sample indicated that the pinning effect of the second phase could be significantly weakened by sufficient shearing of dislocations. The tendency of recrystallization was reversed in annealed samples processed by surface grinding. This was attributed to the high ability of nucleation on the grinded surface and the change of controlling mechanism to the pinning effect of the γⲠphase in the deformation layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 127, May 2017, Pages 116-120
Journal: Materials Characterization - Volume 127, May 2017, Pages 116-120
نویسندگان
Lixi Tian, Cong Xu, Chaoli Ma,