Effect of Accumulative Roll Bonding on Plastic Flow Properties of Commercially Pure Zirconium

Journal Article · Wed May 04 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3589562· OSTI ID:21516761

Sabirov, I; Molina-Aldareguia, J M; Perez-Prado, M T ^[1]; Jiang, L; Kassner, M E ^[2]

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1. Instituto Madrileno de Estudios Avanzados de Materiales-IMDEA Materials Institute, Madrid (Spain)
2. Department of Aerospace and Mechanical Engineering, University of Southern California, CA (United States)

Accumulative roll bonding (ARB) has been considered as one of the promising techniques for fabrication of ultra-fine grained (UFG) metallic materials. The ARB process consists of several cycles of cutting, stacking, and rolling of metal sheets, so very high strains can be induced in the material resulting in significant grain refinement and in the formation of UFG microstructures. The ARB technique has been applied to a wide range of metallic materials such as Al and Al alloys, Mg, Fe and steels, Zr, Cu, as well as composite materials. UFG metallic materials processed via ARB show increased strength. Despite a significant body of experimental research into the deformation behaviour of the ARB-processed materials, the fundamentals of their plastic deformation are not fully understood yet. This work focuses on the effect of grain refinement via ARB-processing on the mechanical behavior and on the strain-rate sensitivity of commercially pure Zr (99.8% purity). The mechanical properties of the as-received coarse-grained (CG) and UFG (as-ARB processed) samples were studied at room temperature at two different strain rates. Mechanical strain rate jump tests were performed during tensile deformation to estimate the instantaneous strain-rate sensitivity. The evolution of surface relief during plastic deformation of pure Zr in both CG and UFG conditions was studied. The features of plastic deformation of pure Zr in both CG and UFG conditions are discussed.

• OSTI ID: 21516761
• Journal Information: AIP Conference Proceedings, Vol. 1353, Issue 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589562; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BONDING
COMPOSITE MATERIALS
DEFORMATION
DISLOCATIONS
DUCTILITY
EVOLUTION
GRAIN BOUNDARIES
GRAIN REFINEMENT
IMPURITIES
PLASTICITY
PROCESSING
ROLLING
SENSITIVITY
STEELS
STRAIN RATE
STRAINS
SURFACES
ZIRCONIUM
ALLOYS
CARBON ADDITIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LINE DEFECTS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
TENSILE PROPERTIES
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENTS