کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1574130 1514700 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure evolution and tensile properties of hot rolled Mg-6Al-3Sn alloy sheet at elevated temperatures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Microstructure evolution and tensile properties of hot rolled Mg-6Al-3Sn alloy sheet at elevated temperatures
چکیده انگلیسی
A fine-grained (∼3.6 μm) Mg-6Al-3Sn (AT63) alloy prepared by a hot rolled method is subjected to uniaxial tensile tests within the temperature range of 25-250 °C. Mg2Sn and Mg17Al12 precipitates at grain boundaries effectively retard the growth of dynamically recrystallized (DRXed) grains. Grain boundary sliding (GBS) is activated at 250 °C, which is indicated by the stable DRXed grain size and agglomeration of the precipitates at grain boundaries. Moreover, Mg2Sn and Mg17Al12 precipitates promote the formation of dynamic recrystallization (DRX). Both the DRX and GBS result in the high elongation (151.4%) of the AT63 alloy at 250 °C. Results obtained here will shed some light on elevated temperature deformation mechanisms of a new type of Mg-Al-Sn system, which is critical to the development of new Mg alloys with potential for applications at elevated temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 643, 3 September 2015, Pages 149-155
نویسندگان
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