Microstructural Effects on Damage Nucleation in Shock-Loaded Polycrystalline Copper

Andrew David Brown, Leda Wayne, Quan Pham, Kapil Krishnan, Pedro Peralta, Sheng Nian Luo, Brian M. Patterson, Scott Greenfield, Darrin Byler, Kenneth J. McClellan, Aaron Koskelo, Rob Dickerson, Xianghui Xiao

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Polycrystalline copper samples with varying thermomechanical histories were shock loaded to induce spall via laser-driven plate impacts at low shock stress (<6 GPa). Electron backscattering diffraction was used to obtain statistics on grain boundary (GB) misorientations within the spall plane and at all GBs that contained damage. Specimens with pre-existing plastic deformation showed dominant intergranular damage at boundaries in the 25 to 50 deg misorientation range, while heat-treated samples had mixed trans- and intergranular damage with a lessened misorientation influence at damaged GBs. 3-D X-ray tomography data were used to analyze global volume statistics and qualitatively inspect the shape of voids present in samples of varying thermomechanical histories. It was found that annealed samples had a mixed mode of spherical- and sheet-like voids, indicative of trans- and intergranular damage, respectively, and the microstructure with the highest number of Σ3 twin boundaries had the highest concentration of spherical voids. Data from a plastically pre-strained sample showed a dominance of needle- and sheet-like voids, indicating primarily intergranular damage due to the higher strength of the bulk material forcing the damage to nucleate at weaker defects, in this case GBs.

Original languageEnglish (US)
Pages (from-to)4539-4547
Number of pages9
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume46
Issue number10
DOIs
StatePublished - Aug 15 2014

Fingerprint

Copper
Nucleation
shock
Statistics
nucleation
damage
copper
voids
Backscattering
misalignment
Needles
Tomography
Plastic deformation
Grain boundaries
Diffraction
X rays
Defects
Microstructure
Electrons
Lasers

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Mechanics of Materials

Cite this

Microstructural Effects on Damage Nucleation in Shock-Loaded Polycrystalline Copper. / Brown, Andrew David; Wayne, Leda; Pham, Quan; Krishnan, Kapil; Peralta, Pedro; Luo, Sheng Nian; Patterson, Brian M.; Greenfield, Scott; Byler, Darrin; McClellan, Kenneth J.; Koskelo, Aaron; Dickerson, Rob; Xiao, Xianghui.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 46, No. 10, 15.08.2014, p. 4539-4547.

Research output: Contribution to journalArticle

Brown, AD, Wayne, L, Pham, Q, Krishnan, K, Peralta, P, Luo, SN, Patterson, BM, Greenfield, S, Byler, D, McClellan, KJ, Koskelo, A, Dickerson, R & Xiao, X 2014, 'Microstructural Effects on Damage Nucleation in Shock-Loaded Polycrystalline Copper', Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 46, no. 10, pp. 4539-4547. https://doi.org/10.1007/s11661-014-2482-z
Brown, Andrew David ; Wayne, Leda ; Pham, Quan ; Krishnan, Kapil ; Peralta, Pedro ; Luo, Sheng Nian ; Patterson, Brian M. ; Greenfield, Scott ; Byler, Darrin ; McClellan, Kenneth J. ; Koskelo, Aaron ; Dickerson, Rob ; Xiao, Xianghui. / Microstructural Effects on Damage Nucleation in Shock-Loaded Polycrystalline Copper. In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2014 ; Vol. 46, No. 10. pp. 4539-4547.
@article{33c9433073564196ad27fcbc92cbce74,
title = "Microstructural Effects on Damage Nucleation in Shock-Loaded Polycrystalline Copper",
abstract = "Polycrystalline copper samples with varying thermomechanical histories were shock loaded to induce spall via laser-driven plate impacts at low shock stress (<6 GPa). Electron backscattering diffraction was used to obtain statistics on grain boundary (GB) misorientations within the spall plane and at all GBs that contained damage. Specimens with pre-existing plastic deformation showed dominant intergranular damage at boundaries in the 25 to 50 deg misorientation range, while heat-treated samples had mixed trans- and intergranular damage with a lessened misorientation influence at damaged GBs. 3-D X-ray tomography data were used to analyze global volume statistics and qualitatively inspect the shape of voids present in samples of varying thermomechanical histories. It was found that annealed samples had a mixed mode of spherical- and sheet-like voids, indicative of trans- and intergranular damage, respectively, and the microstructure with the highest number of Σ3 twin boundaries had the highest concentration of spherical voids. Data from a plastically pre-strained sample showed a dominance of needle- and sheet-like voids, indicating primarily intergranular damage due to the higher strength of the bulk material forcing the damage to nucleate at weaker defects, in this case GBs.",
author = "Brown, {Andrew David} and Leda Wayne and Quan Pham and Kapil Krishnan and Pedro Peralta and Luo, {Sheng Nian} and Patterson, {Brian M.} and Scott Greenfield and Darrin Byler and McClellan, {Kenneth J.} and Aaron Koskelo and Rob Dickerson and Xianghui Xiao",
year = "2014",
month = "8",
day = "15",
doi = "10.1007/s11661-014-2482-z",
language = "English (US)",
volume = "46",
pages = "4539--4547",
journal = "Metallurgical and Materials Transactions B",
issn = "0360-2141",
publisher = "Springer Boston",
number = "10",

}

TY - JOUR

T1 - Microstructural Effects on Damage Nucleation in Shock-Loaded Polycrystalline Copper

AU - Brown, Andrew David

AU - Wayne, Leda

AU - Pham, Quan

AU - Krishnan, Kapil

AU - Peralta, Pedro

AU - Luo, Sheng Nian

AU - Patterson, Brian M.

AU - Greenfield, Scott

AU - Byler, Darrin

AU - McClellan, Kenneth J.

AU - Koskelo, Aaron

AU - Dickerson, Rob

AU - Xiao, Xianghui

PY - 2014/8/15

Y1 - 2014/8/15

N2 - Polycrystalline copper samples with varying thermomechanical histories were shock loaded to induce spall via laser-driven plate impacts at low shock stress (<6 GPa). Electron backscattering diffraction was used to obtain statistics on grain boundary (GB) misorientations within the spall plane and at all GBs that contained damage. Specimens with pre-existing plastic deformation showed dominant intergranular damage at boundaries in the 25 to 50 deg misorientation range, while heat-treated samples had mixed trans- and intergranular damage with a lessened misorientation influence at damaged GBs. 3-D X-ray tomography data were used to analyze global volume statistics and qualitatively inspect the shape of voids present in samples of varying thermomechanical histories. It was found that annealed samples had a mixed mode of spherical- and sheet-like voids, indicative of trans- and intergranular damage, respectively, and the microstructure with the highest number of Σ3 twin boundaries had the highest concentration of spherical voids. Data from a plastically pre-strained sample showed a dominance of needle- and sheet-like voids, indicating primarily intergranular damage due to the higher strength of the bulk material forcing the damage to nucleate at weaker defects, in this case GBs.

AB - Polycrystalline copper samples with varying thermomechanical histories were shock loaded to induce spall via laser-driven plate impacts at low shock stress (<6 GPa). Electron backscattering diffraction was used to obtain statistics on grain boundary (GB) misorientations within the spall plane and at all GBs that contained damage. Specimens with pre-existing plastic deformation showed dominant intergranular damage at boundaries in the 25 to 50 deg misorientation range, while heat-treated samples had mixed trans- and intergranular damage with a lessened misorientation influence at damaged GBs. 3-D X-ray tomography data were used to analyze global volume statistics and qualitatively inspect the shape of voids present in samples of varying thermomechanical histories. It was found that annealed samples had a mixed mode of spherical- and sheet-like voids, indicative of trans- and intergranular damage, respectively, and the microstructure with the highest number of Σ3 twin boundaries had the highest concentration of spherical voids. Data from a plastically pre-strained sample showed a dominance of needle- and sheet-like voids, indicating primarily intergranular damage due to the higher strength of the bulk material forcing the damage to nucleate at weaker defects, in this case GBs.

UR - http://www.scopus.com/inward/record.url?scp=84940721850&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940721850&partnerID=8YFLogxK

U2 - 10.1007/s11661-014-2482-z

DO - 10.1007/s11661-014-2482-z

M3 - Article

AN - SCOPUS:84940721850

VL - 46

SP - 4539

EP - 4547

JO - Metallurgical and Materials Transactions B

JF - Metallurgical and Materials Transactions B

SN - 0360-2141

IS - 10

ER -