کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5456761 1514663 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Size dependent strain rate sensitivity transition from positive to negative in Ti/Ni multilayers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Size dependent strain rate sensitivity transition from positive to negative in Ti/Ni multilayers
چکیده انگلیسی
This work presents a length scale dependent strain rate sensitivity (SRS) transition from positive to negative in Ti/Ni multilayers with unequal thickness of individual layer. The multilayers exhibit distinct interfacial structure and no Ti-Ni amorphous intermixed layer between Ni and Ti layers. It can be found that the hardness first increases with strain rate at large modulation period (λ), showing a positive SRS. Subsequently, a tunable (positive to negative) size dependent SRS phenomenon occurs with further decrease of λ. The present negative SRS is attributed to deterioration of the plasticity with decreasing λ and at larger strain rate, which induces microcracks formation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 680, 5 January 2017, Pages 210-213
نویسندگان
, , ,