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《Journal of Shenyang Institute of Aeronautical Engineering》 2008-01
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Effect of friction stir processing on microstructure and properties of cast Mg-Nd-Zn-Zr

LV Qin-yunSHA Gui-ying(Shenyang Institute of Aeronautical Engineering,Liaoning Shenyang 110136)  
Friction stir processing was applied to cast Mg-Nd-Zn-Zr with 3 different parameters.The dynamic recrystallized structure of the material was observed by employing optical and electron microscopy.The microstructure features indicate that FSP can refine the grains significantly.The tensile mechanical properties were evaluated at room temperature in transverse direction respect to the properties before processing.Tensile tests were also performed at room temperature and the same strain rate in the nugget zone.The results show that the properties after processed are improved considerably compared with the unprocessed.The analysis revealed that the properties improvement were due to refinement of the grains,while the refinement was main result from dynamic recrystallization during FSP.Moreover,the microstructure properties and modification are great related to the processing parameter.
【CateGory Index】: TG146.22
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