Effects of interfacial bonding on spallation in metal-matrix composites

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Two metal-matrix composite systems are studied to determine the influence of inclusions on the spallation strength in plate-impact experiments. The first is an aluminum/ceramic system with several volume fractions of ceramic inclusion, and the second is a copper/niobium composite consisting of 15 vol % niobium particles embedded in the copper matrix. Plate-impact experiments produce peak compressive stresses of {approximately}5 GPa in the aluminum/ceramic system and {approximately}10 GPa in the copper/niobium system. The characteristic code CHARADE is used to calculate detailed compression-release profiles in the composite systems, thus accurately quantifying the wave-evolution occurring between the spall plane and the particle velocity ... continued below

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5 p.

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Hixson, R.S.; Johnson, J.N.; Gray, G.T. III & Price, J.D. September 1, 1995.

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Two metal-matrix composite systems are studied to determine the influence of inclusions on the spallation strength in plate-impact experiments. The first is an aluminum/ceramic system with several volume fractions of ceramic inclusion, and the second is a copper/niobium composite consisting of 15 vol % niobium particles embedded in the copper matrix. Plate-impact experiments produce peak compressive stresses of {approximately}5 GPa in the aluminum/ceramic system and {approximately}10 GPa in the copper/niobium system. The characteristic code CHARADE is used to calculate detailed compression-release profiles in the composite systems, thus accurately quantifying the wave-evolution occurring between the spall plane and the particle velocity (VISAR) measurement at the rear free surface. The aluminum/ceramic system exhibits a strong dependence of the spall strength on inclusion concentration and morphology. In the case of the copper/niobium system, the spall strength remains essentially unchanged by the presence of 15 vol % niobium particles embedded in the copper matrix.

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5 p.

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OSTI as DE95016899

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  • American Physical Society biennial conference on shock compression of condensed matter, Seattle, WA (United States), 13-18 Aug 1995

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  • Other: DE95016899
  • Report No.: LA-UR--95-2470
  • Report No.: CONF-950846--14
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 102448
  • Archival Resource Key: ark:/67531/metadc624564

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  • September 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 29, 2016, 2:18 p.m.

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Hixson, R.S.; Johnson, J.N.; Gray, G.T. III & Price, J.D. Effects of interfacial bonding on spallation in metal-matrix composites, article, September 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc624564/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.