Fine-grained structure in extruded magnesium alloy with long-period stacking order phase

Tatsuya Morikawa, Daisuke Kinoshita, Yoshihito Kawamura, Kenji Higashida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Microstructures developed by warm extrusion for Mg97Zn 1Y2 alloy including long-period stacking order (LPSO) phase have been investigated using SEM and TEM. The extruded magnesium alloy with LPSO phase exhibits high strength and sufficient ductility. Such superior mechanical properties appear by warm extrusion around the temperature of 623K. The microstructure of the extruded alloy consists of matrix of fine-grained hep phase and elongated grains with fine-lamellae including LPSO phase. The grain size of hep matrix was about 1μm, indicating that remarkable grain refinement was occurred by extrusion since the grain size of as-cast alloy was about 500μm. Special attention has been paid on the enrichment of solutes at stacking faults and grain boundaries in the fine-grained matrix, which would contribute not only to the strengthening but also to the stability of fine-grained structure because of its role of an inhibiter against grain coarsening.

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
Pages905-908
Number of pages4
EditionPART 2
ISBN (Print)0878494626, 9780878494620
DOIs
Publication statusPublished - Jan 1 2007
Event6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of
Duration: Nov 5 2007Nov 9 2007

Publication series

NameMaterials Science Forum
NumberPART 2
Volume561-565
ISSN (Print)0255-5476

Other

Other6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
CountryKorea, Republic of
CityJeju
Period11/5/0711/9/07

All Science Journal Classification (ASJC) codes

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

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    Morikawa, T., Kinoshita, D., Kawamura, Y., & Higashida, K. (2007). Fine-grained structure in extruded magnesium alloy with long-period stacking order phase. In Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 (PART 2 ed., pp. 905-908). (Materials Science Forum; Vol. 561-565, No. PART 2). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-462-6.905