کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7972223 | 1514617 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced hardness via interface alloying in nanoscale Cu/Al multilayers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Ultrahigh hardness (yield strength) was achieved in magnetron sputtering nanoscale Cu/Al multilayers upon annealing. The microstructure and mechanical properties of the multilayers were systematically investigated by X-ray diffraction, transmission electron microscopy, energy dispersive X-ray spectroscopy and nanoindentation. Annealing promoted diffusion of Cu and Al atoms in the interfaces and the sharp interface turned to mix, resulting in the formation of Cu/Al intermetallic compounds and its deformation at nanoscale. The Cu/Al intermetallic compounds mainly including Al2Cu grew toward to Al layers and would reducing the effective length between the reduced adjacent layers. As the annealing temperature was increased from 100â¯Â°C to 500â¯Â°C, various kinds and larger size Cu/Al intermetallic compounds emerged, causing the hardness to first increase, reaching an unusually high peak (never reached before in other thin metallic multilayer systems), and then remain nearly unchanged. The physical mechanisms underlying such remarkable enhancement were explored in terms of interface alloying, reduced layer thickness and grain size effects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 726, 30 May 2018, Pages 274-281
Journal: Materials Science and Engineering: A - Volume 726, 30 May 2018, Pages 274-281
نویسندگان
X.Z. Wei, Q. Zhou, K.W. Xu, P. Huang, F. Wang, T.J. Lu,