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Explosive consolidation of rapidly solidified aluminum alloy powders

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Abstract

Dynamic consolidation by explosive detonation was investigated for rapidly solidified Al-Cu-Li-Mg alloy powder. The densification, extent of interparticle bonding, microstructural modifications, and tensile properties were determined. The Al-alloy powders were prepared by vacuum atomization with cooling rates of 103 to 105 K per second. The powders were packed in steel cylinders, which were then evacuated to 1 to 7 Pa (1 to 5 × 10−2 torr) for several hours and then sealed. Compaction experiments were conducted with the explosive surrounding the powder pack and detonated longitudinally. Variations in compaction pressure and detonation velocity were obtained by using different explosives and packing densities. The densification and interparticle bonding were correlated with explosive and powder parameters.

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Authors and Affiliations

  1. McDonnell Douglas Research Laboratories, P.O. Box 516, 63166, St. Louis, MO

    T. C. Peng (Scientist), S. M. L. Sastry (Senior Scientist) & J. E. O’Neal (Scientist)

  2. Northwest Technical Industries, Sequim, WA

    D. Brasher (Engineer)

Authors
  1. T. C. Peng
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  2. S. M. L. Sastry
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  3. J. E. O’Neal
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  4. D. Brasher
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Peng, T.C., Sastry, S.M.L., O’Neal, J.E. et al. Explosive consolidation of rapidly solidified aluminum alloy powders. Metall Trans A 16, 1445–1455 (1985). https://doi.org/10.1007/BF02658677

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  • DOI: https://doi.org/10.1007/BF02658677

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