کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5451688 | 1398552 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High Temperature Stress Rupture Anisotropy of a Ni-Based Single Crystal Superalloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High temperature stress rupture anisotropies of a second generation Ni-base single crystal (SC) superalloy specimens with [001], [011] and [111] orientations under 900â°C/445âMPa and 1100â°C/100âMPa have been investigated in the present study, with attentions to the evolution of γ/γⲠmicrostructure observed by scanning electron microscopy and the dislocation configuration characterized by transmission electron microscopy in each oriented specimen. At 1100â°C/100âMPa as well as 900â°C/445âMPa, the single crystal superalloy exhibits obvious stress rupture anisotropic behavior. The [001] oriented specimen has the longest rupture lifetime at 900â°C/445âMPa, and the [111] oriented sample shows the best rupture strength at 1100â°C/100âMPa. While the [011] oriented specimen presents the worst rupture lifetime at each testing condition, its stress rupture property at 1100â°C/100âMPa is clearly improved, compared with 900â°C/445âMPa. The evident stress rupture anisotropy at 900â°C/445âMPa is mainly attributed to the distinctive movement way of dislocations in each oriented sample. Whereas, at 1100â°C/100âMPa, together with the individual dislocation configuration, the evolution of γ/γⲠmicrostructure in each orientation also plays a key role in the apparent stress rupture anisotropy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 32, Issue 10, October 2016, Pages 1003-1007
Journal: Journal of Materials Science & Technology - Volume 32, Issue 10, October 2016, Pages 1003-1007
نویسندگان
Guanglei Wang, Jinlai Liu, Jide Liu, Tao Jin, Xiaofeng Sun, Xudong Sun, Zhuangqi Hu,