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Microstructure Analysis of Aluminum Alloy and Copper Alloy Circular Shells After Multiaxial Plastic Buckling

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Aluminum and copper cylindrical shells were plastically buckled under quasi-static and dynamic loading conditions with an Absorption Compression-Torsion Plasticity (ACTP: Patent No. WO 2005090822) combined mechanical testing device. Optical microscopy and transmission electron microscopy (TEM) analysis were used to study the microscopic evolutions in the mechanically buckled aluminum and copper alloy samples. Optical microscopy showed evidence of the presence of second-phase particles in both the aluminum and copper alloys samples. Under dynamic loading aluminum samples showed more energy absorption as compared to copper samples. Material flow lines were more pronounced in the copper samples when observed by optical microscopy. The evidence that supports the increased energy absorption in the aluminum cylindrical shells can be supported by the TEM analysis more than the optical microscopy analysis. The TEM results showed highly oriented textured morphology with the presence of few dislocation cells structures and sub-structures.

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Acknowledgments

The authors wish to thank Mr. C. Kinney for his help with the metallographic preparation.

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Authors and Affiliations

  1. Mechanical Engineering Department, Loyola Marymount University, Los Angeles, CA, 90045-8145, USA

    N. Drusina, C. Wilhelm, P. Stoyanov & O.S. Es-Said

  2. Naval Air Systems Command, Naval Air Warfare Center, Patuxent River, MD, 20670-1908, USA

    R. Mahapatra

  3. Laboratoire de Mécanique, Matériaux et Modélisation (L3M), Universite Paris 8, IUT de Trembaly, Paris, France

    A. Abdul-Latif & R. Baleh

Authors
  1. N. Drusina
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  2. R. Mahapatra
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  3. A. Abdul-Latif
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  4. R. Baleh
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  5. C. Wilhelm
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  6. P. Stoyanov
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  7. O.S. Es-Said
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Correspondence to O.S. Es-Said.

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Drusina, N., Mahapatra, R., Abdul-Latif, A. et al. Microstructure Analysis of Aluminum Alloy and Copper Alloy Circular Shells After Multiaxial Plastic Buckling. J. of Materi Eng and Perform 17, 755–766 (2008). https://doi.org/10.1007/s11665-008-9216-6

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  • DOI: https://doi.org/10.1007/s11665-008-9216-6

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