Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Multimodal 3D characterization of voids in shock-loaded tantalum: Implications for ductile spallation mechanisms

Journal Article · · Acta Materialia
 [1];  [2];  [3];  [4];  [4];  [5];  [5];  [5];  [6];  [4]
  1. Univ. of California, Santa Barbara, CA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Texas A&M University
  2. Univ. of California, Santa Barbara, CA (United States); Univ. of Kentucky, Lexington, KY (United States)
  3. Univ. of California, Santa Barbara, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  4. Univ. of California, Santa Barbara, CA (United States)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Carnegie Mellon Univ., Pittsburgh, PA (United States)
Predicting the failure of crystalline materials at high strain rates requires knowledge of the underlying failure mechanisms and their dependence on microstructure. However, little experimental consensus exists on the underlying micromechanics of spallation. In this study, a 3D-EBSD characterization experiment is performed on tantalum prior to and after partial spallation by plate impact, which allowed for the statistical assessment of the microstructural neighborhoods surrounding incipient voids. In analyzing the resulting dataset containing 5884 grains and 467 voids, it is observed that the voids were roughly spherical and consistent in size throughout the spalled material. The voids mostly resided at quadruple points, at triple junctions, at grain boundaries, and within grains, in decreasing order of prevalence. Moreover, voids tended to form at grain boundaries with high degrees of plastic incompatibility, growing into the plastically soft grain but orienting primarily with or perpendicular to the loading direction. Here, the statistics from these analyses of 3D microstructural data support dynamic cavitation models for ductile spallation.
Research Organization:
Univ. of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003857
OSTI ID:
1863551
Alternate ID(s):
OSTI ID: 1805081
Journal Information:
Acta Materialia, Journal Name: Acta Materialia Vol. 215; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (47)

Dynamic Behavior of Materials book September 1994
Multiple material marching cubes algorithm journal January 2003
A bifurcation problem for a compressible nonlinearly elastic medium: growth of a micro-void journal January 1986
Calculation of the taylor factor and lattice rotations for bcc metals deforming by pencil glide journal December 1971
Spall fracture: methodological aspects, mechanisms and governing factors journal January 2010
Influence of Microstructure on the Spall Failure of Aluminum Materials journal July 2007
Microstructural Effects on Damage Nucleation in Shock-Loaded Polycrystalline Copper journal August 2014
Three-dimensional Analysis and Reconstruction of Additively Manufactured Materials in the Cloud-Based BisQue Infrastructure journal March 2019
Dictionary Indexing of Electron Back-Scatter Diffraction Patterns: a Hands-On Tutorial journal May 2019
The Role of Second Phase Intermetallic Particles on the Spall Failure of 5083 Aluminum journal October 2016
Local Mechanical Property Evolution During High Strain-Rate Deformation of Tantalum journal November 2016
Estimating Void Nucleation Statistics in Laser-Driven Spall journal June 2020
A Concise Note on Deformation Twinning and Spall Failure in Magnesium at the Extremes journal August 2020
Accounting for the spall strength of ductile metals by spherical cavity expansion analysis journal September 1987
Dynamic failure of solids journal March 1987
The dynamic growth of a single void in a viscoplastic material under transient hydrostatic loading journal January 2003
Void growth by dislocation emission journal April 2004
Effect of loading direction on grain boundary failure under shock loading journal February 2014
Microstructural effects on damage evolution in shocked copper polycrystals journal September 2016
Do voids nucleate at grain boundaries during ductile rupture? journal September 2017
Spall strength dependence on grain size and strain rate in tantalum journal October 2018
The role of elastic and plastic anisotropy in intergranular spall failure journal April 2019
Local micro-mechanical stress conditions leading to pore nucleation during dynamic loading journal February 2021
A method to correct coordinate distortion in EBSD maps journal October 2014
The TriBeam system: Femtosecond laser ablation in situ SEM journal February 2015
Defects and 3D structural inhomogeneity in electron beam additively manufactured Inconel 718 journal September 2018
Accurate reconstruction of EBSD datasets by a multimodal data approach using an evolutionary algorithm journal April 2019
Effects of structural anisotropy on deformation and damage of a duplex stainless steel under high strain rate loading journal September 2017
A Dictionary Approach to Electron Backscatter Diffraction Indexing journal June 2015
EMsoft: open source software for electron diffraction/image simulations journal July 2017
Stress and Strain Rate Effects on Incipient Spall in Tantalum journal January 2018
Modelling of spalling in tantalum journal July 2006
Continuum Measures of Spall Damage journal March 1972
Technique for the Determination of Dynamic‐Tensile‐Strength Characteristics journal July 1967
On the influence of loading profile upon the tensile failure of stainless steel journal May 2007
A new TriBeam system for three-dimensional multimodal materials analysis journal February 2012
The role of grain boundary orientation on void nucleation in tantalum
  • Hahn, Eric N.; Fensin, Saryu J.; Germann, Timothy C.
  • SHOCK COMPRESSION OF CONDENSED MATTER - 2017: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, AIP Conference Proceedings https://doi.org/10.1063/1.5044791
conference January 2018
Stress hot spots in viscoplastic deformation of polycrystals journal September 2010
Bisque: a platform for bioimage analysis and management journal December 2009
On localization and void coalescence as a precursor to ductile fracture
  • Tekoğlu, C.; Hutchinson, J. W.; Pardoen, T.
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 373, Issue 2038 https://doi.org/10.1098/rsta.2014.0121
journal March 2015
Nanovoid nucleation by vacancy aggregation and vacancy-cluster coarsening in high-purity metallic single crystals journal September 2011
Energetics and nucleation of point defects in aluminum under extreme tensile hydrostatic stresses journal January 2014
Unraveling the Anomalous Grain Size Dependence of Cavitation journal November 2016
Quantitative voxel-to-voxel comparison of TriBeam and DCT strontium titanate three-dimensional data sets journal June 2015
On the nature of spall strength journal April 2014
DREAM.3D: A Digital Representation Environment for the Analysis of Microstructure in 3D journal April 2014
Three-dimensional sampling of material structure for property modeling and design journal June 2014

Similar Records

Spallation modeling in tantalum
Conference · Mon Sep 01 00:00:00 EDT 1997 · OSTI ID:658330

Microstructural effects on damage evolution in shocked copper polycrystals
Journal Article · Thu Jun 30 20:00:00 EDT 2016 · Acta Materialia · OSTI ID:1341861

Do voids nucleate at grain boundaries during ductile rupture? [Do voids initiate at grain boundaries during ductile rupture?]
Journal Article · Tue Jul 11 20:00:00 EDT 2017 · Acta Materialia · OSTI ID:1465810