کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1579833 1001232 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of creep threshold stresses using in situ TEM straining experiment in an Al-5Y2O3-10SiC composite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Investigation of creep threshold stresses using in situ TEM straining experiment in an Al-5Y2O3-10SiC composite
چکیده انگلیسی
Creep behavior of metal matrix composites is similar to dispersion strengthen alloys and characterized by the presence of a threshold stress below which the creep rate is negligible. This threshold stress is attributed, at least in dispersion-strengthened alloys, to dislocation particle interactions in which the detachment of the dislocations from the particle is the rate-limiting step. Creep experiments were performed on an Al-5Y2O3-10SiC composite in the temperature range of 473 and 573 K and the nature of the dislocation-particle interaction was determined by performing in situ straining experiments at elevated temperature in a transmission electron microscope. The threshold stress and the detachment stress are temperature dependent and the detachment stress is less than the threshold stress emphasizing the contribution of load transfer from the matrix to the reinforcement phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issue 9, 15 April 2010, Pages 2390-2397
نویسندگان
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