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The high strain rate compressive response of Mg-Al alloy/fly Ash cenosphere composites

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Abstract

The strain rate dependence of mechanical properties of AZ91D alloy composites filled with 5 wt.% hollow fly ash cenosphere is examined in the strain rate range of 630–1,203 s−1 using a split-Hopkinson pressure bar system. In addition, a test scheme is designed to study the intermediate strain rate response of the material. Addition of fly ash caused grain refinement and finer precipitates in the matrix alloy. Compared to the matrix alloy, the energy absorption is higher in AZ91D/fly ash cenosphere composites at comparable strain rates. In addition, the yield strength is found to be about 19–41% higher in the composites containing fly ash cenospheres.

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Authors and Affiliations

  1. Composite Materials and Mechanics Laboratory, Mechanical and Aerospace Engineering Department, Polytechnic Institute of New York University, Brooklyn, NY, 11201, USA

    Dung D. Luong & Nikhil Gupta

  2. Center for Composite Materials, Materials Engineering Department, University of Wisconsin-Milwaukee, Milwaukee, WI, 53201, USA

    Pradeep K. Rohatgi

Authors
  1. Dung D. Luong
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  2. Nikhil Gupta
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  3. Pradeep K. Rohatgi
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Correspondence to Nikhil Gupta.

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Luong, D.D., Gupta, N. & Rohatgi, P.K. The high strain rate compressive response of Mg-Al alloy/fly Ash cenosphere composites. JOM 63, 48–52 (2011). https://doi.org/10.1007/s11837-011-0028-z

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  • DOI: https://doi.org/10.1007/s11837-011-0028-z

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