In-situ synchrotron investigation of the phases- and their morphology-development in Mg–Nd–Zn alloys: Paper presented at the Symposium “Tomographic and Radiographic Imaging with Synchrotron X-rays and Neutrons” of the MSE 2018, 26–28 September 2018, Darmstadt, Germany

Domonkos Tolnai, Tungky Subroto, Serge Gavras, Ricardo Henrique Buzolin, Norbert Hort

Research output: Contribution to journalArticle

Abstract

The addition of Zn to the Mg–Nd system improves the yield strength and creep resistance, however its influence on the intermetallic phases in the ternary system is not yet fully understood. Understanding the sequence of phase-formation and phase-evolution during solidification and processing is essential to microstructure design. The solidification was investigated with in-situ synchrotron radiation-diffraction and tomography during cooling from the molten state to 200°C to investigate the phase-formation and transformation characteristics. The solidification starts with α-Mg followed by two distinct intermetallic phases T2 and T3. The results suggest that Zn stabilizes the Mg3Nd phase and accelerates precipitate formation. The dendritic morphology changes during solidification towards coarser shapes, thus impedes feeding and promotes hot tearing.
Original languageEnglish
Pages (from-to)4-10
Number of pages7
JournalInternational Journal of Materials Research
Volume111
Issue number1
DOIs
Publication statusPublished - Jan 2020
Event2018 Materials Science and Engineering - Darmstadt, Germany
Duration: 26 Sep 201828 Sep 2018
https://www.mse-congress.de/home/

Keywords

  • In situ
  • MgNdZn alloys
  • Solidification
  • Synchrotron diffraction
  • Synchrotron tomography

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry
  • Physical and Theoretical Chemistry

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