Outstanding enhancement in critical resolved shear stress of basal slip with precipitation in Mg-10Dy-0.7La alloy: A micro-pillar compression study

U. R. Ghori, A. Prasad, Y. Lu, Y. L. Chiu, I. P. Jones, S. S. Singh, N. N. Gosvami, J. Jain

Research output: Contribution to journalArticlepeer-review

Abstract

The strengthening effect of precipitates on the operation of basal < a > slip in Mg-10Dy-0.7La has been studied. Micropillar compression was performed on grains of solution-treated and peak-aged specimens selected to favour basal < a > slip. The CRSS of basal < a > slip was calculated from the stress–strain curves. The peak-aged alloy showed a remarkable increase in the CRSS for basal < a > slip as compared to that of solution-treated specimen: the highest reported increase for any Mg-RE alloy. Increased CRSS can be rationalised by considering network of precipitates.

Original languageEnglish
Article number131265
Number of pages5
JournalMaterials Letters
Volume308
Issue numberB
Early online date10 Nov 2021
DOIs
Publication statusE-pub ahead of print - 10 Nov 2021

Keywords

  • Basal slip
  • CRSS
  • Electron microscopy
  • Micro-pillar
  • Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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