Effect of La addition on precipitation hardening in Mg–10Dy alloy

Research output: Contribution to journalArticle


  • A. Prasad
  • S. Si
  • Y. L. Chiu
  • S. Y. Lee
  • S. S. Singh
  • N. N. Gosvami
  • J. Jain

Colleges, School and Institutes

External organisations

  • Indian Institute of Technology Delhi
  • Chungnam National University
  • Indian Institute of Technology Kanpur


The effect of a small lanthanum (La) addition on Mg–10 wt% Dy alloy has been studied using isothermal aging at 120 °C. A combination of scanning transmission electron microscope (STEM) imaging and high-angle annular dark field (HAADF) based electron tomography has been used to characterize the precipitates. βF and β′ precipitates were determined, where βF precipitates form a bridge connecting two β′ precipitates, thus forming a continuous network of precipitates. This network results in a significant increase in hardness.


Original languageEnglish
Article number100898
Publication statusPublished - Dec 2020


  • Electron tomography, Mg alloys, Microstructure, Precipitation hardening, STEM

ASJC Scopus subject areas