Tensile Properties of Friction Stir Welded AZ31B Mg Alloy

Seon Mi Ha; Sang Shik Kim; Dong Yim Chang; Chang Gil Lee; Sung Joon Kim

doi:10.4028/www.scientific.net/SSP.124-126.1357

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Tensile Properties of Friction Stir Welded AZ31B Mg Alloy

Abstract:

The effect of prior T4 heat treatment and subsequent microstructural evolution on tensile behavior of friction stir welded (FSWed) AZ31B-H24 alloy was examined in this study. Selected AZ31B-H24 plates were prior T4 heat treated at 400 for 24 hours and subsequently friction stir welded. The tensile properties, optical micrographs and SEM fractographs for FSWed AZ31B-T4 specimens were compared with those for the H24 counterparts. Prior T4 heat treatment tended to decrease the tensile ductility reduction in FSWed AZ31B-H24 specimen. The tensile ductility reduction mechanism as associated with prior T4 heat treatment is discussed based on detailed micrographic and fractographic observations.

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Periodical:

Solid State Phenomena (Volumes 124-126)

Pages:

1357-1360

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.124-126.1357

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Online since:

June 2007

Authors:

Seon Mi Ha, Sang Shik Kim, Dong Yim Chang, Chang Gil Lee, Sung Joon Kim

Keywords:

AZ31B Mg Alloy, Friction Stir Welding (FSW), Tensile Properties, Twin Boundary

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References

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