Investigation of compression behavior of Mg-4Zn-2(Nd, Gd)-0.5Zr at 350°C by in situ synchrotron radiation diffraction

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

Authors

  • R. H. Buzolin
  • D. Tolnai
  • C. L. Mendis
  • A. Stark
  • N. Schell
  • H. Pinto
  • K. U. Kainer
  • N. Hort

As-cast Mg-4Zn-0.5Zr, Mg-4Zn-2Gd-0.5Zr and Mg-4Zn-2Nd- 0.5Zr alloys were investigated by in situ synchrotron radiation diffraction during hot compression at 350 °C using the facilities of P07 beamline of Petra III at Deutsches Elektronen Synchrotron (DESY), Hamburg, Germany. The specimens were heated at a rate of 100 K/min and compressed with an initial strain rate of 1.1 x 10"3 s"1 up to 30 % strain. The addition of rare earth elements improved the yield strength from 23 MPa in the Mg-4Zn-0.5Zr alloy up to 40 MPa in the alloy with Nd and Gd. Continuous dynamic recrystallization played an important role in the Mg-4Zn- 0.5Zr alloy during deformation and twinning was not dominant. Discontinuous dynamic recrystallization was observed in the in the Mg-4Zn-2Gd-0.5Zr along the grain boundary regions while the grains remained largely without any recrystallization. In the Mg-4Zn-2Gd-0.5Zr and Mg-4Zn-2Nd-0.5Zr alloys the contribution of twinning to deformation was observed at 350 °C. Reasons for these differences will be discussed with respect to microstructures of the alloys.

Original languageEnglish
Title of host publicationMagnesium Technology 2015 - Held During TMS 2015 144th Annual Meeting and Exhibition
EditorsMichele V. Manuel, Alok Singh, Martyn Alderman, Martyn Alderman, Neale R. Neelameggham
Number of pages5
PublisherThe Minerals, Metals & Materials Society
Publication date2015
Pages103-107
ISBN (electronic)9781119082439
DOIs
Publication statusPublished - 2015
Externally publishedYes
Event144th Annual Meeting and Exhibition of Magnesium Technology - TMS 2015 - Orlando, United States
Duration: 15.03.201519.03.2015
Conference number: 144

    Research areas

  • Deformation behaviour, In situ, RE additions, Synchrotron radiation, ZK40
  • Engineering

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