کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7971957 | 1514614 | 2018 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nano-scale precipitate evolution and mechanical properties of 7085 aluminum alloy during thermal exposure
ترجمه فارسی عنوان
تحولات نانو و رسیدن به خواص مکانیکی آلیاژ آلومینیوم 7085 در هنگام قرار گرفتن در معرض حرارتی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
As a new generation of Al-Zn-Mg-Cu alloy, 7085 aluminum alloy is a promising structural material in the field of aerospace industry. However, research on its thermal stability is still lacking. In the present work, thermal exposure was carried out on the T7452-treated 7085 aluminum alloy under different temperatures (100â¯Â°C, 125â¯Â°C, 150â¯Â°C and 175â¯Â°C) for 500â¯h. Variations of tensile properties and hardness were exhibited. The microstructure, nano-scale precipitates and fracture characteristics of the alloy were investigated using optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that with the increase of exposure temperature, the strength and hardness increase first and then decrease while the elongation and the reduction of area increase continuously as compared to those of the non-thermal exposed alloy. The transformation from ηⲠphase to η phase during thermal exposure occurs continuously during thermal exposure. In addition, as the exposure temperature increases, the average dimensions of precipitates and the average spacing of neighbor precipitates become larger. The influence of precipitates on mechanical properties of the alloy is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 729, 27 June 2018, Pages 411-422
Journal: Materials Science and Engineering: A - Volume 729, 27 June 2018, Pages 411-422
نویسندگان
Pan Dai, Xian Luo, Yanqing Yang, Zongde Kou, Bin Huang, Chen Wang, Jinxin Zang, Jigang Ru,