JOM

, Volume 66, Issue 2, pp 277–290 | Cite as

Dynamic Behavior of a Rare-Earth-Containing Mg Alloy, WE43B-T5, Plate with Comparison to Conventional Alloy, AM30-F

  • Sean Agnew
  • Wilburn Whittington
  • Andrew Oppedal
  • Haitham El Kadiri
  • Matthew Shaeffer
  • K. T. Ramesh
  • Jishnu Bhattacharyya
  • Rick Delorme
  • Bruce Davis
Article

Abstract

The dynamic behavior of Mg alloys is an area of interest for applications such as crash-sensitive automotive components and armor. The rare-earth element-containing alloy WE43B-T5 has performed well in ballistic testing, so the quasi-static (~10−3 1/s) and dynamic (~600–5000 1/s) mechanical behaviors of two Mg alloys, rolled WE43B-T5 and extruded AM30-F, were investigated using servohydraulic and Kolsky bar testing in uniaxial tension and compression. The yield stress was surprisingly isotropic for WE43B-T5 relative to conventional Mg alloys (including extruded AM30-F). The WE43B plate was textured; however, it was not the typical basal texture of hot-rolled Mg-Al alloys. The effect of strain rate on the yield strength of WE43B-T5 is small and the strain-hardening behavior is only mildly rate sensitive (m = 0.008). The combination of high strength (~300 MPa), moderate ductility (0.07–0.20), and low density yield a material with good specific energy absorption capacity.

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Copyright information

© The Minerals, Metals & Materials Society 2014

Authors and Affiliations

  • Sean Agnew
    • 1
  • Wilburn Whittington
    • 2
  • Andrew Oppedal
    • 2
  • Haitham El Kadiri
    • 2
  • Matthew Shaeffer
    • 3
  • K. T. Ramesh
    • 3
  • Jishnu Bhattacharyya
    • 1
  • Rick Delorme
    • 4
  • Bruce Davis
    • 4
  1. 1.Materials Science and EngineeringUniversity of VirginiaCharlottesvilleUSA
  2. 2.Mechanical EngineeringMississippi State UniversityStarkvilleUSA
  3. 3.Mechanical EngineeringJohns Hopkins UniversityBaltimoreUSA
  4. 4.Magnesium Elektron North AmericaMadisonUSA

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