کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8955427 | 1646089 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deformation mechanisms in FCC Co dominated by high-density stacking faults
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Deformation mechanisms in FCC Co dominated by high-density stacking faults Deformation mechanisms in FCC Co dominated by high-density stacking faults](/preview/png/8955427.png)
چکیده انگلیسی
It has been known that twin boundaries dominate the plasticity of nanotwinned metals. However, the role of stacking faults on the deformation mechanisms in face-centered-cubic (FCC) metals is less well understood. Here we investigate the deformation mechanisms of FCC Co with high-density stacking faults using in situ micropillar compression and atomistic simulations. In situ compression tests show a prominent strain rate dependence, with either strain softening or strain hardening observed at different strain rates. Molecular dynamics simulations reveal that the stacking faults and partial dislocations dominate the plastic deformation of FCC Co. Abundant dislocation junctions form at high strain rate, leading to strengthening.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 736, 24 October 2018, Pages 12-21
Journal: Materials Science and Engineering: A - Volume 736, 24 October 2018, Pages 12-21
نویسندگان
R. Su, D. Neffati, S. Xue, Q. Li, Z. Fan, Y. Liu, H. Wang, Y. Kulkarni, X. Zhang,