کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5456317 | 1514659 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The role of δ phase for fatigue crack propagation behavior in a Ni base superalloy at room temperature
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The role of δ phase for fatigue crack propagation behavior in a Ni base superalloy at room temperature The role of δ phase for fatigue crack propagation behavior in a Ni base superalloy at room temperature](/preview/png/5456317.png)
چکیده انگلیسی
The fatigue crack propagation behavior of a Ni base superalloy at room temperature with various volume fractions of δ phase was investigated. The result shows that fatigue crack growth rate of the alloy increases as δ phase volume fraction increases, while both the fatigue crack propagation resistance and the strength of the alloy decrease. The characteristic of δ phase on crack propagation behavior is depended on the dislocations slipping blocked by granular δ phase with low length-diameter radio. On the other hand, dislocations easily piled up around long needle-like δ phase which leads to stress concentration. This stress concentration causes δ phase debonding from the matrix and helps the crack easy propagates along long needle-like δ phase surrounded by precipitates free zone (PFZ).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 684, 27 January 2017, Pages 312-317
Journal: Materials Science and Engineering: A - Volume 684, 27 January 2017, Pages 312-317
نویسندگان
Jinlan An, Lei Wang, Yang Liu, Wenliang Cai, Xiu Song,