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Characterization of Dynamic Deformation and Failure of Novel Light Weight Steel Alloy

  • T. R. Walter
  • P. MoyEmail author
  • T. Sano
  • K. Limmer
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

The need for new weight-saving high-strength materials has been increasing in recent years. The demand for fuel efficiency in the auto industry has driven research in the development of lightweight materials and structures while maintaining crash worthiness and safety. The constraints on vehicle weight is also felt in the defense industry. The need to maintain or reduce weight while enhancing protection and durability is a critical goal for the DoD. Fe-Mn-Al is a family of alloys which have been identified as a potential replacement for high strength structural steel such as RHA. Fe-Mn-Al has shown similar properties and performance with 10–15% reduction in weight when compared to RHA (Howell, Microstructural Influence on Dynamic Properties of Age Hardenable FeMnAl Alloys, 2009).

This study will examine the high strain rate properties of a lightweight Fe-Mn-Al alloys using the split Hopkinson pressure bar. Tension and compression tests will be performed to examine flow stress and strain to failure as a function of loading rate. High rate digital image correlation will be performed using a pair of Kirana high speed cameras capable of 5 M fps. A combination of SEM techniques (e.g. EDS and EBSD) and micro-XCT will help identify damage and deformation of tested specimens.

Keywords

Fe-Mn-Al Strain-rate Dynamic failure Digital image correlation Phenomenological 

References

  1. 1.
    Howell, R.A.: Microstructural Influence on Dynamic Properties of Age Hardenable FeMnAl Alloys (dissertation). Missouri University of Science and Technology, Rolla (2009)Google Scholar
  2. 2.
    Sutton, M.A., Orteu, J.J., Schreier, H.: Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts, Theory and Applications. Springer, New York (2009)Google Scholar
  3. 3.
    U.S. Detail Specification, MIL-DTL-12560K(MR), Armor Plate, Steel, Wrought, Homogeneous (For use in Combat-Vehicles and for Ammunition Testing). (2013)Google Scholar
  4. 4.
    ASTM: E23-16b, Standard Test Methods for Notched Bar Impact Testing of Metallic Materials. ASTM International, West Conshohocken, PA (2016)Google Scholar

Copyright information

© The Society for Experimental Mechanics, Inc. 2019

Authors and Affiliations

  1. 1.U.S. Army Research Laboratory, Aberdeen Proving GroundAberdeenUSA

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