کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7974804 | 1514667 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanistic behaviour and modelling of creep in powder metallurgy FGH96 nickel superalloy
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A physically-based crystal slip model for creep deformation in FGH96 has been developed. A critical γⲠprecipitate size is found to exist above which precipitate shearing occurs by strongly-coupled dislocations pairs. The critical size for FGH96 superalloy is less than 15 nm, which is smaller than most of the γⲠprecipitates in the aged treated samples. A bimodal precipitate hardening model has been presented from which the slip strength resulting from differing heat treatments may be determined. Creep strain rate is found to decrease with increasing slip strength. The crystal slip model successfully captures the effect of heat treatment (in terms of γⲠprecipitate distributions) on resulting creep behaviour in alloy FGH96.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 676, 31 October 2016, Pages 441-449
Journal: Materials Science and Engineering: A - Volume 676, 31 October 2016, Pages 441-449
نویسندگان
Zichao Peng, Gaofeng Tian, Jun Jiang, Muzi Li, Yang Chen, Jinwen Zou, Fionn P.E. Dunne,