کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5454935 | 1514364 | 2017 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Ag additions on the lengthening rate of Ω plates and formation of Ï phase in Al-Cu-Mg alloys during thermal exposure
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Ag additions on the lengthening rate of Ω plates and formation of Ï phase in Al-Cu-Mg alloys during thermal exposure Effect of Ag additions on the lengthening rate of Ω plates and formation of Ï phase in Al-Cu-Mg alloys during thermal exposure](/preview/png/5454935.png)
چکیده انگلیسی
Effect of Ag additions on the mechanical properties and microstructures of the peak-aged Al-Cu-Mg alloys during prolonged thermal exposure at 150 °C, was investigated by tensile testing, conventional transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM). The results showed that after exposure for 500 h, > 85% of the peak strength remained. Microstructure observations indicated that increasing the Ag content from 0.14 to 0.57% promoted the precipitation of a fine and uniform Ω phase and suppressed the formation of the θⲠphase, leading to a notable improvement of the strength properties and thermal stability of the studied alloys. Quantitative TEM analysis showed that the coarsening of Ω phase was predominated by plate lengthening rather than thickening, while its lengthening rate was independent of various Ag additions during exposure at 150 °C. In addition, an increase of Ag also facilitated the formation of a cubic Ï phase, which was further supported by STEM results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 123, January 2017, Pages 1-8
Journal: Materials Characterization - Volume 123, January 2017, Pages 1-8
نویسندگان
Yaru Zhou, Zhiyi Liu, Song Bai, Puyou Ying, Lianghua Lin,