Forming Nanocrystalline Structures in Metal Particle Impact
SCIE
SCOPUS
- Title
- Forming Nanocrystalline Structures in Metal Particle Impact
- Authors
- Lemiale, V; Estrin, Y; Kim, HS; O'Donnell, R
- Date Issued
- 2011-10
- Publisher
- SPRINGER
- Abstract
- Grain refinement by plastic deformation is becoming increasingly popular as a way of producing metals with improved properties, such as higher mechanical strength. Surface treatment techniques in which a metallic substrate is bombarded with metallic particles can generate nanocrystalline layers in the impact zone. Understanding the physical mechanisms underlying this grain refinement is crucial for achieving an improvement of existing experimental processes. In this article, we propose a numerical framework combining finite element (FE) simulations with a dislocation-based material model to predict the evolution of the microstructure under particle impact. A single particle normally impacting on a metallic substrate was simulated at different initial velocities. The simulations were compared with previously reported numerical and experimental data. The results indicate that our model accurately captures the grain refinement in the impact zone for a broad range of velocities. This approach provides valuable information on the formation of nanocrystalline layers in both the substrate and the impacting particle. Its potential applications include processes involving surface treatment by high velocity particles, such as shot peening, surface mechanical attrition treatment, kinetic metallization, cold spray, etc.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11568
- DOI
- 10.1007/S11661-010-0588-5
- ISSN
- 1073-5623
- Article Type
- Article
- Citation
- METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, vol. 42A, no. 10, page. 3006 - 3012, 2011-10
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.