Mechanical properties and microstructure of heat-resistant Mg-Al-Ca alloys formed by thixomolding

Tadayoshi Tsukeda, Akihiro Maehara, Ken Saito, Mayumi Suzuki, Junichi Koike, Kouichi Maruyama, Hiroshi Kubo

Research output: Contribution to conferencePaperpeer-review

6 Citations (Scopus)

Abstract

Thixomolding is a new process in which the metallic slurry is injected into a die cavity at semi-solid temperatures to form near net-shape products from the solid feed stock in one step. The relationship between the chemical composition and the mechanical properties of heat-resistant Mg-Al-Ca alloys formed by thixomolding was investigated. The effect of a variable such as barrel temperature was also studied. It was found that the addition of Ca is effective in improving the tensile strength and creep resistance of the alloys at elevated temperatures. The ductility is decreased with increasing Ca content. The microstructure of specimens was observed with SEM and TEM. It showed a fine structure consisting of granular primary α Mg solid solution and a network consisting of eutectic α and intermetallic compounds. The morphology of this network varies depending on Ca content.

Original languageEnglish
Pages395-402
Number of pages8
Publication statusPublished - 2000 Dec 1
EventMagnesium Technology 2000 - Nashville, TN, United States
Duration: 2000 Mar 122000 Mar 16

Other

OtherMagnesium Technology 2000
CountryUnited States
CityNashville, TN
Period00/3/1200/3/16

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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