کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7979885 | 1514728 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of equal channel angular pressing on the Portevin-Le Chatelier effect in an Al3Mg alloy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of equal channel angular pressing on the Portevin-Le Chatelier effect in an Al3Mg alloy Effect of equal channel angular pressing on the Portevin-Le Chatelier effect in an Al3Mg alloy](/preview/png/7979885.png)
چکیده انگلیسی
Plastic deformation of alloys is often accompanied with discontinuous flow known as the Portevin-Le Chatelier (PLC) instability. Recent studies of mechanical behavior of alloys subjected to severe plastic deformation (SPD) revealed different forms this phenomenon can take as a result of grain refinement. In the present work, it is reported that SPD may effectively suppress the macroscopic stress serrations characteristic of the PLC effect. At the same time, small-scale stress fluctuations can still be resolved on the deformation curves. To investigate their nature, stress vs time curves for an Al3Mg alloy processed by equal channel angular pressing (ECAP) are compared with those obtained for the initial coarse-grained (CG) material, using statistical and multifractal approaches to multi-scale analysis of time series. An interpretation of the results in terms of the concurrency of phenomena of self-organized criticality and synchronization in the dislocation system is proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 615, 6 October 2014, Pages 7-13
Journal: Materials Science and Engineering: A - Volume 615, 6 October 2014, Pages 7-13
نویسندگان
T.A. Lebedkina, M.A. Lebyodkin, T.T. Lamark, M. JaneÄek, Y. Estrin,