About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Heterostructured and Gradient Materials (HGM IV): Tailoring Heterogeneity for Superior Properties
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Presentation Title |
Effect of Alloying Additions on the Strength of Confined Nanocrystalline Layers |
Author(s) |
Sevda Fathipour, Amir Motallebzadeh, Özgür Duygulu, Sezer Ozerinc |
On-Site Speaker (Planned) |
Sezer Ozerinc |
Abstract Scope |
Nanolayered metals are nanostructured materials composed of alternating metals with submicron layer thickness. Their outstanding mechanical properties and thermal stability have been the subject of many studies in the last two decades. Almost all of these studies have focused on nanolayers composed of pure metals. On the other hand, little is known about the effect of alloying additions on the mechanical behavior of metallic nanolayers. In this work, we prepared magnetron sputtered films of Cu-Cu50Nb50 and Cu90Nb10-Cu50Nb50 nanolayers with layer thicknesses in the range of 10 – 100 nm. The size-independent nature of the Cu50Nb50 amorphous layers enabled us to focus on the effect of alloying additions in the crystalline layers. The results show that alloying additions to Cu considerably enhances the hardness of the nanolayered composite. Similar to the behavior of pure-metal nanolayers, the strength of alloyed nanolayers increases with decreasing layer thickness. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Mechanical Properties, Characterization |