کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1638276 1517018 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strengthening and stress drop of ultrafine grain aluminum after annealing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Strengthening and stress drop of ultrafine grain aluminum after annealing
چکیده انگلیسی

Ultrafine grain pure aluminum was produced by equal channel angular pressing and cold rolling, the deformed aluminum was annealed at 200 °C for 1 h. The tensile curves of deformed and annealed aluminum show that yield strength of deformed aluminum increases by 100%–300% and its elongation decreases by about 20%. After low temperature annealing, strength of annealed aluminum increases by 20% and elongation decreases by over 50%, the recovery of dislocations may be the main cause of annealing strengthening. In addition, there is an abrupt stress drop in the tensile curves of annealed aluminum and the formation of shear band is responsible for it.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 20, Issue 11, November 2010, Pages 2139-2142