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Title: Characterization and modeling of mechanical behavior of single crystal titanium deformed by split-Hopkinson pressure bar

Journal Article · · International Journal of Plasticity

Single crystal titanium samples were dynamically loaded using split-Hopkinson pressure bar (SHPB) and the resulting microstructures were examined. Characterization of the twins and dislocations present in the microstructure was conducted to understand the pathway for observed mechanical behavior. Electron backscatter diffraction (EBSD) was used to measure textures and quantify twinning. Microstructures were profusely twinned after loading, and twin variants and corresponding textures were different as a function of initial orientation. Focused ion beam (FIB) foils were created to analyze dislocation content using transmission electron microscopy (TEM). Large amounts of dislocations were present, indicating that plasticity was achieved through slip and twinning together. Viscoplastic self-consistent (VPSC) modeling was used to confirm the complex order of operations during deformation. The activation of different mechanisms was highly dependent upon crystal orientation. For [0001] and View the MathML source[101¯1]-oriented crystals, compressive twinning was observed, followed by secondary tensile twinning. Furthermore, dislocations though prevalent in the microstructure, contributed to final texture far less than twinning.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1258282
Alternate ID(s):
OSTI ID: 1425694
Report Number(s):
LA-UR-15-26741
Journal Information:
International Journal of Plasticity, Vol. 82, Issue C; ISSN 0749-6419
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

References (48)

Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y journal December 2001
Orientation Effect on Mechanical Properties of Commercially Pure Titanium at Room Temperature journal February 2007
A dislocation-based constitutive law for pure Zr including temperature effects journal May 2008
The influence of grain size and texture on the mechanical response of high purity hafnium journal May 2007
The influence of texture, strain rate, temperature, and chemistry on the mechanical behavior of hafnium journal July 2004
A model for experimentally-observed high-strain-rate dynamic strain aging in titanium journal July 2000
The high-strain-rate response of alpha-titanium: experiments, deformation mechanisms and modeling journal January 1998
Adiabatic shear localization in α-titanium: experiments, modeling and microstructural evolution journal August 2004
Deformation twinning journal January 1995
Flow asymmetry and nucleation stresses of twinning and non-basal slip in magnesium journal May 2013
Influence of texture and test velocity on the dynamic, high-strain, tensile behavior of zirconium journal June 2012
Micro-cantilever testing of ⟨a⟩ prismatic slip in commercially pure Ti journal March 2011
Experimental study on the dynamic tensile behavior of a poly-crystal pure titanium at elevated temperatures journal January 2007
Modeling bending of α-titanium with embedded polycrystal plasticity in implicit finite elements journal March 2013
Modeling mechanical response and texture evolution of α-uranium as a function of strain rate and temperature using polycrystal plasticity journal April 2013
An Investigation of the Mechanical Properties of Materials at very High Rates of Loading journal November 1949
A self-consistent approach for modelling texture development of two-phase polycrystals: Application to titanium alloys journal September 1997
A self-consistent anisotropic approach for the simulation of plastic deformation and texture development of polycrystals: Application to zirconium alloys journal September 1993
Self-consistent modelling of the mechanical behaviour of viscoplastic polycrystals incorporating intragranular field fluctuations journal August 2007
Dynamic mechanical behavior of pure titanium journal November 2004
Hardening evolution of AZ31B Mg sheet journal January 2007
Quantitative analysis of deformation twinning in zirconium journal March 2009
Constitutive description of dynamic deformation: physically-based mechanisms journal January 2002
Evolution of microstructure and shear-band formation in α-hcp titanium journal March 1994
The onset of twinning in metals: a constitutive description journal November 2001
High-temperature creep behavior and microstructure analysis of binary Ti–6Al alloys with trace amounts of Ni journal June 2009
Toward understanding twin–twin interactions in hcp metals: Utilizing multiscale techniques to characterize deformation mechanisms in magnesium journal September 2014
Transmission Electron Microscope In Situ Straining Technique to Directly Observe Defects and Interfaces During Deformation in Magnesium journal May 2015
An examination of the use of the Modified Jogged-Screw model for predicting creep behavior in Zircaloy-4 journal July 2013
Variability in EBSD statistics for textured zirconium journal July 2013
In-Situ TEM Observation of Twinning and Detwinning During Cyclic Loading in Mg journal April 2013
Observations of the Atomic Structure of Tensile and Compressive Twin Boundaries and Twin–Twin Interactions in Zirconium journal August 2014
Mechanical properties and deformation mechanisms of a commercially pure titanium journal October 1999
Stochastic modeling of twin nucleation in polycrystals: An application in hexagonal close-packed metals journal May 2014
Anisotropic response of high-purity α-titanium: Experimental characterization and constitutive modeling journal April 2010
The crystallography and deformation modes of hexagonal close-packed metals journal January 1967
Modeling texture, twinning and hardening evolution during deformation of hexagonal materials journal April 2007
Effects of high rates of loading on the deformation behavior and failure mechanisms of hexagonal close-packed metals and alloys journal March 2002
Strain hardening of titanium: role of deformation twinning journal August 2003
Shear banding in commercial pure titanium deformed by dynamic compression journal October 2014
The relation between macroscopic and microscopic strain hardening in F.C.C. polycrystals journal October 1984
A model for texture development dominated by deformation twinning: Application to zirconium alloys journal November 1991
Mechanical response of zirconium—I. Derivation of a polycrystal constitutive law and finite element analysis journal September 2001
The use of X-ray diffraction to determine slip and twinning activity in commercial-purity (CP) titanium journal October 2008
A crystal plasticity model for hexagonal close packed (HCP) crystals including twinning and de-twinning mechanisms journal October 2013
Effect of twinning on microstructure and texture evolutions of pure Ti during dynamic plastic deformation journal March 2013
deformation twinning in pure Ti during dynamic plastic deformation journal April 2012
The effects of deformation conditions on microstructure and texture of commercially pure Ti journal November 2009

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