The effect of Zn content on the mechanical properties of Mg-4Nd-xZn Alloys (x = 0, 3, 5 and 8 wt.%)

Serge Gavras*, Ricardo H. Buzolin, Tungky Subroto, Andreas Stark, Domonkos Tolnai

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The mechanical properties of as-cast Mg-4Nd-xZn (x = 0, 3, 5 or 8 wt.%) alloys were investigated both in situ and ex situ in as-cast and solution-treated conditions. The additions of 3 or 5 wt.% Zn in the base Mg-4Nd alloy did not improve yield strength in comparison to the binary Mg-4Nd alloy. Mechanical properties were shown to improve only with the relatively high concentration of 8 wt.% Zn to Mg-4Nd. The change in intermetallic morphology from a continuous intermetallic to a lamella-like intermetallic was the primary reason for the decreased mechanical properties in Mg-4Nd-3Zn and Mg-4Nd-5Zn compared with Mg-4Nd and Mg-4Nd-8Zn. The dissolution of intermetallic at grain boundaries following heat treatment further indicated the importance of grain boundary reinforcement as shown in both in situ and ex situ compression testing. Azimuthal angle-time plots indicated little grain rotation most noticeably in Mg-4Nd, which also indicated the influence of a strong intermetallic network along the grain boundaries.

Original languageEnglish
Article number1103
Number of pages12
JournalMaterials
Volume11
Issue number7
DOIs
Publication statusPublished - 28 Jun 2018

Keywords

  • Deformation behaviour
  • In situ synchrotron radiation diffraction
  • Magnesium alloys
  • Mg-Nd-Zn alloys
  • Neodymium
  • Zinc addition

ASJC Scopus subject areas

  • Materials Science(all)

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