کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1576165 1514770 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strength scaling law, deformation kinetics and mechanisms of nanostructured Ti
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Strength scaling law, deformation kinetics and mechanisms of nanostructured Ti
چکیده انگلیسی

We investigate the tensile properties, strain rate sensitivity, and activation volume of nanostructured Ti prepared by equal channel angular pressing plus a series of thermal treatment. Simultaneous enhancement of strength and tensile ductility is achieved. The strain rate sensitivity is found to decrease with decreasing grain sizes (∼150–450 nm). A new Hall–petch relationship is presented and discussed. The analyses on the internal friction peaks at around −70 °C suggest that twins could play the primary role for the strain hardening of the annealed nanostructured Ti, consistent with the miniscule activation volumes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 573, 20 June 2013, Pages 141–147
نویسندگان
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