Evidence of melt in {open_quotes}soft{close_quotes} recovered copper jets

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A shaped charge (81 mm, 42{degrees}, OFHC copper cone) was fired into a {open_quotes}soft{close_quotes} recovery bunker to allow metallurgical examination of recovered jet particles and the slug. The initial weight of the copper liner was 245 gm, of which 184 gm was recovered. The number of jet particles recovered was 37 (approximately 63% of the particles formed by the charge). Extensive metallurgical analyses were performed on the recovered slug and jet particles. The microstructural features associated with voids, e.g. dendritic grain growth, clearly indicate that the regions in the vicinity of the centerline of the slug and jet particles were ... continued below

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8 p.

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Lassila, D.H.; Nikkel, D.J. Jr. & Kershaw, R.P. August 1, 1995.

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Description

A shaped charge (81 mm, 42{degrees}, OFHC copper cone) was fired into a {open_quotes}soft{close_quotes} recovery bunker to allow metallurgical examination of recovered jet particles and the slug. The initial weight of the copper liner was 245 gm, of which 184 gm was recovered. The number of jet particles recovered was 37 (approximately 63% of the particles formed by the charge). Extensive metallurgical analyses were performed on the recovered slug and jet particles. The microstructural features associated with voids, e.g. dendritic grain growth, clearly indicate that the regions in the vicinity of the centerline of the slug and jet particles were melted. In this work we present calculations of jet temperature as a function of constitutive behavior. In order to predict melt in the center region of the jet we find it necessary to scale flow stress with a pressure dependent shear modulus.

Physical Description

8 p.

Notes

OSTI as DE95017264

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  • 4. international conference on metallurgical and materials applications of shock-wave and high-strain-rate phenomena, El Paso, TX (United States), 6-10 Aug 1995

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  • Other: DE95017264
  • Report No.: UCRL-JC--120717
  • Report No.: CONF-950856--3
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 102416
  • Archival Resource Key: ark:/67531/metadc625240

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 16, 2016, 7:02 p.m.

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Lassila, D.H.; Nikkel, D.J. Jr. & Kershaw, R.P. Evidence of melt in {open_quotes}soft{close_quotes} recovered copper jets, article, August 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc625240/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.