期刊
MATERIALS & DESIGN
卷 109, 期 -, 页码 503-510出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2016.07.103
关键词
Cold-spray; Bonding mechanism; Deposition efficiency; Finite element analysis; Impact behavior; Johnson-Cook model
资金
- McGill Engineering Doctoral Award
- Discovery Grant of Canada National Sciences and Engineering Research Council [RGPIN 418469-2012]
Cold-spray involving particle and substrate that are of distinct deformability, i.e., soft (particle)/hard (substrate) and hard (particle)/soft (substrate) systems, has been investigated using systematic numerical simulations. For the soft/hard system, the bonding and deposition is dominantly controlled by particle plasticity. In contrast, physical trapping and mechanical interlocking play an important role for the hard/soft system. Employing a layered-particle/substrate model and a crater-particles model, we demonstrated the operation and playoff of different bonding mechanisms, and provided predictive assessments of the deposition efficiency that correspond well to experimental measurements. The present study offers key mechanistic insights towards rational process design of cold-spray. (C) 2016 Elsevier Ltd. All rights reserved.
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