PROPERTIES AND NANOSTRUCTURES OF MATERIALS PROCESSED BY SPD TECHNIQUES
- Jianyu
- Yuntian Theodore
Metallic materials usually exhibit higher strength but lower ductility after being plastically deformed by conventional techniques such as rolling, drawing and extrusion. In contrast, nanostructured metals and alloys processed by severe plastic deformation (SPD) have demonstrated both high strength and high ductility. This extraordinary mechanical behavior is attributed to the unique nanostructures generated by SPD processing. It demonstrates the possibility of tailoring the microstructures of metals and alloys by SPD to obtain superior mechanical properties. The SPD-generated nanostructures have many features related to deformation, including high dislocation densities, and high- and low-angle grain boundaries in equilibrium or non-equilibrium states. This paper reviews the mechanical properties and the defect structures of SPD-processed nanostructured materials. Keywords: strength, ductility, nanostructures, SPD, non-equilibrium grain boundary
- Research Organization:
- Los Alamos National Laboratory.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 975748
- Report Number(s):
- LA-UR-01-5211; TRN: US201018%%835
- Resource Relation:
- Conference: Submitted to: Ultrafine Grained Materials II, Proceedings for Second International Symposium on Ultrafine Grained Materials, The 2002 TMS Annual Meeting, February 17-21, 2002, Seattle, WA, US
- Country of Publication:
- United States
- Language:
- English
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