کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9795764 | 1514934 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Grain refinement and superplastic flow in an aluminum alloy processed by high-pressure torsion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Grain refinement and superplastic flow in an aluminum alloy processed by high-pressure torsion Grain refinement and superplastic flow in an aluminum alloy processed by high-pressure torsion](/preview/png/9795764.png)
چکیده انگلیسی
An aluminium-2024 alloy was prepared in the annealed and the solution treated conditions. Specimens in both conditions were processed by high-pressure torsion (HPT) at temperatures of either 293 or 673 K giving grain sizes for both conditions of â¼0.15 and â¼0.30 μm for these two processing temperatures, respectively. Tensile testing was conducted at 673 K and superplastic elongations were achieved in both the annealed and the solution treated samples, with a maximum elongation of 570% for an annealed specimen processed by HPT at 293 K. To check on the significance of microstructural inhomogeneities across the HPT disks, samples were machined either from the center of the disks or from an off-center position. The experimental results show that higher elongations are achieved at the off-center position. The similarity between the annealed and the solution treated conditions after HPT is attributed to a dissolution of precipitates during HPT processing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 408, Issues 1â2, 5 November 2005, Pages 141-146
Journal: Materials Science and Engineering: A - Volume 408, Issues 1â2, 5 November 2005, Pages 141-146
نویسندگان
Sergey V. Dobatkin, Elena N. Bastarache, Genki Sakai, Takeshi Fujita, Zenji Horita, Terence G. Langdon,