Microstructure refining of aluminum alloys using aluminothermic reaction with ZnO nanoparticles

J. H. Shin, J. H. Jeon, D. H. Bae

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Abstract The wide popularities of grain refiner and modifier in aluminum alloy industry enable us to achieve improved properties and performances. Here, using aluminothermic reaction between nano-oxide particles (ZnO, ~20 nm in size) and aluminum alloy (A356), the microstructure refining effect on aluminum alloy is investigated. By the incorporation of nanoparticles with semi-solid melt treatment, the coarse primary aluminum dendritic microstructures are transformed to more fine and equiaxed structure showing improved mechanical properties. Converting mechanisms are interpreted in terms of the nucleation site increment, as well as the grain growth restriction, by decomposition and dissolution of the nano-oxide particles in aluminum alloy melt.

Original languageEnglish
Article number18642
Pages (from-to)96-99
Number of pages4
JournalMaterials Letters
Publication statusPublished - 2015 Jul 15

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation Grant (no. NRF-2013R1A2A2A01068931 ) and the Yonsei University Research Fund of 2014.

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Microstructure refining of aluminum alloys using aluminothermic reaction with ZnO nanoparticles'. Together they form a unique fingerprint.

Cite this