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- W845876185 abstract "7050-T7451 aluminum alloy plates was friction stir welded at different welding parameters.Mechanical properties of the joints were estimated according to tensile test and hardness test.The microstructure evolution during friction stir welding(FSW) was examined using optical microscope(OM) and transmission electron microscope(TEM).The nugget zone(NZ) has a recrystallized,fine equiaxed grain structure with high dislocation density.Strengthening precipitates appear to have gone to solution.Heat mechanical affected zone(TMAZ) was characterized by a highly bend deformed grain structure with partly dynamic recovery and dynamic recrystallization.The grain structure in heat affected zone(HAZ)is similar to that of the base metal with little growth in size and contained a relatively low dislocation density.Strengthening precipitates coarsen severely and the precipitated-free zone(PFZ) along the grain boundaries increase in width.The mechanical properties of the joints were affected by welding parameters with different microstructure and welding defects.The joint with largest tensile strength was welded at the parameters with tool traverse speed of 200 mm/min and rotation rate of 800 r/min,up to 88% of that of base metal." @default.
- W845876185 created "2016-06-24" @default.
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- W845876185 date "2009-01-01" @default.
- W845876185 modified "2023-09-24" @default.
- W845876185 title "Microstructure and Mechanical Properties of Friction Stir Welded 7050-T7451 Aluminum Alloy Plates" @default.
- W845876185 hasPublicationYear "2009" @default.
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