|Mechanical properties of friction stir welded 2024 aluminum alloy and precipitated phases in stir zone|
ZHANG, Y. B., DU, C. Y., LI, J. N.
vol. 55 (2017), no. 3, pp. 191 - 194
2024 aluminum alloy sheets in T4 temper were welded successfully by friction stir welding (FSW) technique. When the welding travel speed was 300 mm min–1, tensile strength reached a maximum value (294 MPa). The precipitated phase is mainly metastable U (AlCuMg) of reinforced phases in thermo-mechanically affected zone (TMAZ). Lots of the AlCu3 black particles precipitated on the grain boundary of TMAZ. However, a large number of Cu2Mg black granular precipitates were observed in the WN region.
friction stir welding, welding, metals and alloys
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