Improvement of Mechanical Properties in Thixomolded MG Alloy AZ91D by Friction Stir Welding

S. H.C. Park, Y. S. Sato, H. Kokawa, T. Tsukeda

研究成果: Paper査読

10 被引用数 (Scopus)

抄録

A thixomolded magnesium (Mg) alloy AZ91D was fiiction-stir-welded. Relationships between mechanical properties and microstracture were examined in the weld. The base material consisted of eutectic structure with some primary phases, whereas the stir zone showed an equaixed homogeneous solid solution. Hardness in the stir zone increased with decreasing thermal effects during friction stir welding. Tensile properties of the transverse specimen consisting of both the weld and base material did not differ from those of the base material. The fracture of the weld occurred in the unaffected base material region. The longitudinal tensile specimen including only the stir zone showed over 10 % larger ultimate tensile strength and elongation than the transverse tensile specimen. The present study showed that friction stir welding (FSW) could improve mechanical properties of thixomolded Mg alloy AZ91D by homogenization of the as-cast microstrucrure.

本文言語English
ページ267-272
ページ数6
出版ステータスPublished - 2002 12月 1
イベントTrends in Welding Research: Proceedings of the 6th International Conference - Phoenix, AZ, United States
継続期間: 2002 4月 152002 4月 19

Other

OtherTrends in Welding Research: Proceedings of the 6th International Conference
国/地域United States
CityPhoenix, AZ
Period02/4/1502/4/19

ASJC Scopus subject areas

  • 材料科学(全般)
  • 機械工学

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