Influence of nano-size inclusions on spall fracture of copper single crystals

S. V. Razorenov, G. I. Kanel, B. Herrmann, E. B. Zaretsky, G. E. Ivanchihina

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

19 Scopus citations

Abstract

Spall experiments have been carried out for copper in different structural states. The samples were copper single crystals, crystals of Cu + 0.1% Si, copper crystals with silica particles of 180 nm average size, and polycrystalline copper. In experiments, the free surface velocity histories were recorded with the VISAR. The recovered samples were studied using optical microscopy and SEM. Solid solution Cu + 0.1% Si demonstrates slower spall process than pure copper crystals. At longer pulse durations its spall strength is slightly less than that of pure crystals but approaches the latter with decreasing pulse duration. Fracture of copper with silica inclusions is completed much faster. The spall strength of this material is close to that of Cu + 0.1% Si crystals at longer pulse duration and approaches the strength of polycrystalline copper with decreasing the load duration. Fractography of the spall surfaces correlates with the free surface velocity histories. The main fracture surface of the Cu + 0.1/oSi grains consists of net of dimples ∼4 μm to 40 μm mean diameter. The fracture surfaces of copper with silica inclusions is covered by a net of dimples of 1 μm to 5 μm size.

Original languageEnglish
Title of host publicationShock Compression of Condensed Matter - 2007
Subtitle of host publicationProceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2007 APS SCCM
Pages581-584
Number of pages4
DOIs
StatePublished - 1 Dec 2007
Event15th Biennial International Conference of the APS Topical Group on Shock Compression of Condensed Matter, SCCM 2007 - Waikoloa, HI, United States
Duration: 24 Jun 200729 Jun 2007

Publication series

NameAIP Conference Proceedings
Volume955
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference15th Biennial International Conference of the APS Topical Group on Shock Compression of Condensed Matter, SCCM 2007
Country/TerritoryUnited States
CityWaikoloa, HI
Period24/06/0729/06/07

Keywords

  • Copper
  • Fractography
  • Single crystals
  • Spall fracture
  • Spall strength

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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