HRTEM observation of the age hardening precipitates in Mg-Gd-Sc alloy

Kunio Fukumori*, Tokimasa Kawabata, Kenji Matsuda, Susumu Ikeno

*Corresponding author for this work

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

2 Scopus citations

Abstract

High resolution transmission electron microscope (HRTEM) observation was carried out to investigate the precipitates in Mg-Gd-Sc alloy. In the specimen aged at 473K, the hardness increased gradually with increasing aging time, started to increase rapidly after 16h and the peak hardness was obtained at 128h. In the as-quenched specimen, the diffuse spots considering to the some ordering were observed between 0000 transmitted spot and 1100 magnesium matrix spots in the selected area diffraction pattern. The diffraction spots corresponding to DO19 type structure (a=0.64nm, c=0.521nm) were observed in the early stage of aging at 473K. The contrast of the precipitates similar to the ß' phase based on base centered orthorhombic structure in Mg-Gd alloy were observed predominantly in the specimen after aging for 32h. It was revealed that the precipitates in Mg-Gd-Sc alloy were similar to that of Mg-Gd alloy.

Original languageEnglish
Title of host publicationSelected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
PublisherTrans Tech Publications Ltd
Pages307-310
Number of pages4
EditionPART 1
ISBN (Print)0878494626, 9780878494620
DOIs
StatePublished - 2007
Event6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of
Duration: 2007/11/052007/11/09

Publication series

NameMaterials Science Forum
NumberPART 1
Volume561-565
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Country/TerritoryKorea, Republic of
CityJeju
Period2007/11/052007/11/09

Keywords

  • Aging
  • Mg-RE alloy
  • Transmission electron microscope

ASJC Scopus subject areas

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

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