کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1571760 1000654 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantitative measurements of small scaled grain sliding in ultra-fine grained Al-Zn alloys produced by friction stir processing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Quantitative measurements of small scaled grain sliding in ultra-fine grained Al-Zn alloys produced by friction stir processing
چکیده انگلیسی
An Al-15 wt.% Zn alloy was processed by friction stir processing to produce grain sizes of ~ 0.5 μm, ~ 1 μm, and ~ 2 μm. A simple and effective method was developed to determine the true strain by scribing marker lines with scaled division using focused ion beam micromachining prior to deformation. The “microscopic” grain boundary sliding, with displacements of adjacent grains of the order of a nanometer, can easily be detected by the proposed technique, providing a surface analysis with high accuracy that could be used to observe the changes in relief with increasing strains. Moreover, the occurrence of grain boundary sliding at room temperature was considered a major cause for higher strain rate sensitivity in fine-grained Al-Zn alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 61, Issue 11, November 2010, Pages 1043-1053
نویسندگان
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