کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1584154 | 1514899 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of temperature on the tensile properties of an as-cast aluminum alloy A319
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The tensile properties of an as-cast A319 alloy were investigated as a function of temperature. It was found that the A319-Al alloy remained inherently brittle in the temperature range of â90 °C < T < 270 °C and the mechanical integrity was not satisfied as defined by the Considère criterion. Apparently, in this temperature range fracturing of brittle intermetallics, including Si particles is dominant. At T > 270 °C the mode of failure shifts to being essentially ductile by the development of numerous dimples. Under these conditions the development of critical stresses at matrix/particle interfaces needed for brittle fracture no longer occurs. Apparently, at these temperatures thermally activated processes lead to significant relaxation of stress incompatibilities at particle/matrix interfaces and results in appreciable plastic deformation within the matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 452â453, 15 April 2007, Pages 682-687
Journal: Materials Science and Engineering: A - Volumes 452â453, 15 April 2007, Pages 682-687
نویسندگان
E. Rincón, H.F. López, M.M. Cisneros, H. Mancha, M.A. Cisneros,