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发表时间：2022-10-09

发表刊物：金属学报

所属单位：运载工程与力学学部

卷号：43

期号：8

页面范围：868-874

ISSN号：0412-1961

摘要：Fully coupled thermo-mechanical model of friction stir welding is used
   to analyze the effect of axial load on friction stir welding
   process.Results indicate that the insufficient axial load leads to the
   failure of the friction stir welding.The material deformation on the top
   surface is affected by the rotation of both the welding pin and the
   shoulder,which causes a larger material deformation on the top surface
   than that near the bottom surface.The material deformation is not
   symmetric to the welding line.The material deformation on the advancing
   side is larger than that on the retreating side.The asymmetry of the
   material deformation can be weakened with the increase of the axial
   load. The maximum temperature of the welding plate during the friction
   stir welding process is increased with the increase of the axial
   load.The temperature field near the welding tool in the nugget zone can
   become more homogeneous when the axial load is increased.

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