Early stage dynamic damage and the role of grain boundary type

Ellen Kathleen Cerreta; A. Perez-Bergquist; Darcie Dennis-Koller; Carl Patrick Trujillo; George Thompson Gray; C. Brandl; Timothy Clark Germann; J. P. Escobedo

doi:10.1016/j.scriptamat.2012.01.051

Early stage dynamic damage and the role of grain boundary type

Ellen Kathleen Cerreta
, A. Perez-Bergquist
, Darcie Dennis-Koller
, Carl Patrick Trujillo
, George Thompson Gray
, C. Brandl
, Timothy Clark Germann
, J. P. Escobedo

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

Abstract

The role of grain boundary type in the early stages of dynamic damage evolution in copper has been investigated. Through a combination of polycrystalline and large-grained specimens, it has been shown that Σ3 and low-angle boundaries are resistant to void nucleation during shock loading to peak compressive stresses between 1.5 and 2.5 GPa. It is postulated that these boundaries promote slip transmission or secondary slip activation and thereby relieve the stress concentrations necessary for void nucleation at a boundary.

Original language	English
Pages (from-to)	638-641
Number of pages	4
Journal	Scripta Materialia
Volume	66
Issue number	9
DOIs	https://doi.org/10.1016/j.scriptamat.2012.01.051
State	Published - May 1 2012

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abstract = "The role of grain boundary type in the early stages of dynamic damage evolution in copper has been investigated. Through a combination of polycrystalline and large-grained specimens, it has been shown that Σ3 and low-angle boundaries are resistant to void nucleation during shock loading to peak compressive stresses between 1.5 and 2.5 GPa. It is postulated that these boundaries promote slip transmission or secondary slip activation and thereby relieve the stress concentrations necessary for void nucleation at a boundary.",

author = "Cerreta, \{Ellen Kathleen\} and A. Perez-Bergquist and Darcie Dennis-Koller and Trujillo, \{Carl Patrick\} and Gray, \{George Thompson\} and C. Brandl and Germann, \{Timothy Clark\} and Escobedo, \{J. P.\}",

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AU - Dennis-Koller, Darcie

AU - Trujillo, Carl Patrick

AU - Gray, George Thompson

AU - Brandl, C.

AU - Germann, Timothy Clark

AU - Escobedo, J. P.

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AB - The role of grain boundary type in the early stages of dynamic damage evolution in copper has been investigated. Through a combination of polycrystalline and large-grained specimens, it has been shown that Σ3 and low-angle boundaries are resistant to void nucleation during shock loading to peak compressive stresses between 1.5 and 2.5 GPa. It is postulated that these boundaries promote slip transmission or secondary slip activation and thereby relieve the stress concentrations necessary for void nucleation at a boundary.

UR - https://www.scopus.com/pages/publications/84858070498

U2 - 10.1016/j.scriptamat.2012.01.051

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JO - Scripta Materialia

JF - Scripta Materialia

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Early stage dynamic damage and the role of grain boundary type

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