کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7970173 1514380 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The inhibiting effect of dislocation helices on the stress-induced orientation of S' precipitates in Al-Cu-Mg alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
The inhibiting effect of dislocation helices on the stress-induced orientation of S' precipitates in Al-Cu-Mg alloy
چکیده انگلیسی
The phenomenon of restrained stress-induced preferential orientation of S′ precipitates is investigated using a single-crystal of Al-1.23Cu-0.43 Mg alloy. Al-1.23Cu-0.43 Mg single-crystal specimens are subjected to stress aging, and the microstructure is analyzed by transmission electron microscopy (TEM). It is found that the stress-induced preferential orientation of S′ precipitates is restrained owing to the dislocations produced by a higher stress. The effect of dislocations on the oriented precipitates depends on the total length of the intersection lines for precipitate habit planes and dislocation glide planes. This investigation not only provides important insight into solving the anisotropy problem attributed to precipitation strengthening, but also offers a benchmark for choosing the appropriate stress range in manufacturing of Al-Cu-Mg alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 107, September 2015, Pages 197-201
نویسندگان
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