کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1518387 1511617 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anomalous diffusion in presence of twin boundaries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Anomalous diffusion in presence of twin boundaries
چکیده انگلیسی

After implantation of the 71Ge radiotracer in the Mg-1.8 wt% Al magnesium alloy, tracer diffusion coefficients were measured using both the serial sectioning and the residual activity technique in the temperature range from 448 to 848 K. Anomalously high diffusivities were observed at high temperatures where volume diffusion usually predominates. A contribution of high diffusivity paths to the total diffusion flux can be a possible explanation of both phenomena. Based on the high fraction of twin boundaries confirmed by electron microscopy, a simple microstructure model is proposed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 68, Issues 5–6, May–June 2007, Pages 785–790
نویسندگان
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