This paper deals with the tensilel properties through jointing AA7050-T7451 and AA2024-T4 aluminum alloys in aviation by friction stir weld and analyzing fracture surfaces.The results show that the ultimate strength can reach 90%, the yield limit can reach 75%, the ultimate strength of AA7050/AA2024 FSW joint can reach 60.5% of AA7050 and 70.8% of AA2024.The yield limit can reach 46.2 % of AA7050 and 75.5% of AA2024.The equi-axial fine grains are found in the weld nugget, the coarse and distorted grains in the thermo-mechanically affected zone, and coarse grains in the heat affected zone.The fractures occur at the advancing side between thermo-mechanically affected zone and heat affected zone.Dimples appear on the fracture surfaces, which means that the fractures are ductile fracture.
CHEN Zhen-zhong, MA Xiao-ge, XIAO Yao, LI Ming
. Tensile properties of friction stir welded aluminum alloys in aviation[J]. Journal of Shenyang Aerospace University, 2013
, 30(5)
: 47
-50
.
DOI: 10.3969/j.issn.2095-1248.2013.05.010
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