کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8044215 | 1518915 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic compression behavior of 6005 aluminum alloy aged at elevated temperatures
ترجمه فارسی عنوان
رفتار فشرده سازی پویای 6005 آلومینیوم آلیاژ در دمای بالا
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کلمات کلیدی
6005 آلیاژ آلومینیوم، درمان پیری مصنوعی، تکامل میکروارگانیسم، فشرده سازی پویا،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
چکیده انگلیسی
In this study, relationship between dynamic compression behavior and microstructure of 6005 aluminum alloy artificially aged at elevated temperatures in the range of 180â¯Â°C to 330â¯Â°C for 0.5â¯h was investigated. Dynamic compression response at strain rates from 1200 sâ1 to 2700 sâ1 was studied using a modified split Hopkinson pressure bar system. It was observed that aging temperature has profound influence on generation of microstructure and resulting properties of the alloy. It is widely known that an increase in hardness of Al-Mg-Si alloys results with increase in aging temperature and aging time. This can be attributed to the formation of dense population of metastable β'' precipitates in the microstructure of peak aged Al-Mg-Si alloys. Energy absorption was observed to increase while there was no obvious change in the dynamic stress strain behavior with increasing strain rate. However, dynamic stress-strain behavior exhibits an evident dependence on aging temperature which has an influence on the initial microstructure. At constant strain rate, homogenously distributed fine needle like β'' precipitates were observed in the alloy aged at 280â¯Â°C. This alloy exhibits higher strength but lower energy absorption in comparison with the alloys aged at other temperature. Results show that dynamic stress-strain behavior is sensitive to precipitates while aging at 280â¯Â°C for 0.5â¯h is sufficient for obtaining excellent precipitation strengthening and better energy absorption ability under dynamic compression.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 155, September 2018, Pages 604-611
Journal: Vacuum - Volume 155, September 2018, Pages 604-611
نویسندگان
Long Zhang, Hong He, Shikang Li, Xiaodong Wu, Luoxing Li,