کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7974241 | 1514632 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spall damage of a Ta particle-reinforced metallic glass matrix composite under high strain rate loading
ترجمه فارسی عنوان
آسیب ضربه به یک کامپوزیت ماتریکس فلزی تقویت شده با ذرات جامد تحت بارگذاری بارهای بالا
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کلمات کلیدی
شیشه ای فلزی، کامپوزیت تقویت شده ذرات، تاثیر پلانار، اشعه ایکس کامپیوتری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
We investigate deformation and damage of a Zr-based bulk metallic glass (BMG) and its Ta particle-reinforced composite (MGMC) under impact loading, as well as quasi-static tension for comparison. Yield strength, spall strength, and damage accumulation rate are obtained from free-surface velocity histories, and MGMC appears to be more damage-resistant. Scanning electron microscopy, electron back scattering diffraction and x-ray computed tomography, are utilized for characterizing microstructures, which show features consistent with macroscopic measurements. Different damage and fracture modes are observed for BMG and MGMC. Multiple well-defined spall planes are observed in BMG, while isolated and scattered cracking around reinforced particles dominates fracture of MGMC. Particle-matrix interface serves as the source and barrier to crack nucleation and propagation under both quasi-static and impact loading. Deformation twinning and grain refinement play a key role in plastic deformation during shock loading but not in quasi-static loading. In addition, 3D cup-cone structures are resolved in BMG, but not in MGMC due to its heterogeneous stress field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 711, 10 January 2018, Pages 284-292
Journal: Materials Science and Engineering: A - Volume 711, 10 January 2018, Pages 284-292
نویسندگان
X.C. Tang, W.R. Jian, J.Y. Huang, F. Zhao, C. Li, X.H. Xiao, X.H. Yao, S.N. Luo,