TEM observation of precipitates in a Mg-Gd-Sc alloy with high content of Sc

Takafumi Fujii*, Tokimasa Kawabata, Kenji Matsuda, Susumu Ikeno

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Precipitates in a Mg-Gd-Sc alloy with high Sc content (up to 13mass%) were examined by means of transmission electron microscopy. Plate-like precipitates appeared during the early stages of aging of specimens aged at 573 K. The plate-like precipitates lay on the {11̄00 } magnesium matrix planes, and were similar to the β1 phase and β phase in the counterpart Mg-Gd-Zr alloy aged at 523 K. These precipitates had a high Sc content. Particle-shaped precipitate were observed alongside the plate-like precipitates, unlike the case in Mg-Gd alloys. The contrasts of the plate-like precipitates became longer and the number density of precipitate contrasts increased with increasing aging time at 573 K up to the point where the maximum hardness was attained. We suggest that the plate-like precipitates contribute to the increased hardness of Mg-Gd-Sc alloys with a high content of Sc.

Original languageEnglish
Title of host publicationPRICM7
PublisherTrans Tech Publications Ltd
Pages627-630
Number of pages4
ISBN (Print)0878492550, 9780878492558
DOIs
StatePublished - 2010
Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
Duration: 2010/08/022010/08/06

Publication series

NameMaterials Science Forum
Volume654-656
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
Country/TerritoryAustralia
CityCairns, QLD
Period2010/08/022010/08/06

Keywords

  • Aging
  • Mg-Gd-Sc alloy
  • Precipitates
  • Transmission electron microscopy

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'TEM observation of precipitates in a Mg-Gd-Sc alloy with high content of Sc'. Together they form a unique fingerprint.

Cite this