Uncovering the role of nanoscale Si particles on  the thermal stability of  a lamellar-nanostructured Al–1%Si alloy

Linfei Shuai, Tianlin Huang*, Tianbo Yu*, Guilin Wu, Xiaoxu Huang

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

3 Downloads (Pure)

Abstract

This study investigates particle governed thermal stability in lamellar-nanostructured Al–1.0%Si using in-situ transmission electron microscopy and post-mortem observations. Microstructural coarsening, dominated by Y-junction motion, is correlated with dispersed Si nanoparticles. Si particles within lamellae efficiently hinder dislocation movement during deformation, fostering a configuration with Si particles along incidental dislocation boundaries (IDBs). This particle–IDB configuration significantly impedes Y-junction motion, retarding lamellar coarsening. The enhanced pinning force from particle–IDB synergy, combined with direct pinning by Si particles, contributes to improved thermal stability in lamellar-nanostructured Al–1.0%Si.

Original languageEnglish
JournalMaterials Research Letters
Volume12
Issue number3
Pages (from-to)208-216
ISSN2166-3831
DOIs
Publication statusPublished - 2024

Keywords

  • In-situ transmission electron microscopy
  • interconnecting incidental dislocation boundary
  • Lamellar-nanostructured Al alloys
  • nanoparticle
  • Significant breakthrough in fundamental materials science
  • thermal stability

Fingerprint

Dive into the research topics of 'Uncovering the role of nanoscale Si particles on  the thermal stability of  a lamellar-nanostructured Al–1%Si alloy'. Together they form a unique fingerprint.

Cite this