کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990255 | 1516126 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The precipitation behavior and mechanical properties of cast Al-4.5Cu-3.5Zn-0.5Mg alloy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The precipitation behavior and mechanical properties of cast Al-4.5Cu-3.5Zn-0.5Mg alloy The precipitation behavior and mechanical properties of cast Al-4.5Cu-3.5Zn-0.5Mg alloy](/preview/png/7990255.png)
چکیده انگلیسی
The precipitation behavior of a cast Al-4.5Cu-3.5Zn-0.5Mg alloy was comprehensively analyzed using differential scanning calorimetry (DSC), Vickers hardness measurement, electrical conductivity measurement, and transmission electron microscopy (TEM). The results revealed that three exothermic reactions occur during the heating process of DSC, giving rise to exothermic peaks at around 130, 250, and 280â¯Â°C due to the formation of Guinier-Preston (GP) zones and the precipitation of Ω phase and θⲠphase, respectively. TEM observations indicated that the predominant phase was the Ω phase, with only small amounts of the θⲠphase precipitating at 280â¯Â°C. STEM analysis showed that elements Zn and Mg segregate at the Ω-α interface. The precipitation of the Ω phase was remarkably promoted by the addition of Zn. The tensile strength and elongation heated up to 280â¯Â°C with the heating rate of 5â¯Â°C/min were 403â¯MPa and 9.2%, respectively. It was thus concluded that the precipitation sequence of the cast alloy was supersaturated solid solution (SSS)âGP zoneâΩ phaseâθⲠphase. The cast alloy possesses high strength and high toughness due to the predominance of the Ω phase and the lack of substantial θⲠphase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 768, 5 November 2018, Pages 707-713
Journal: Journal of Alloys and Compounds - Volume 768, 5 November 2018, Pages 707-713
نویسندگان
Haisheng Wang, Bo Jiang, Jiayi Zhang, Nanhai Wang, Danqing Yi, Bin Wang, Huiqun Liu,