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论文类型：期刊论文

发表时间：2018-03-01

发表刊物：JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY

收录刊物：SCIE、EI、Scopus

卷号：32

期号：3

页面范围：1287-1296

ISSN号：1738-494X

关键字：Friction stir welding; Grain growth; Monte Carlo method; Fluid turbulence model

摘要：The 3D fluid model was used to simulate the friction stir welding process. Three-dimensional Monte Carlo model with nucleation in each MC step was then applied to simulate the grain growth. The validity of this model is verified by comparison with the experimental and numerical results. The influences of tool shoulder diameter and rotational speed are further studied. Equiaxed grains in the stirring zone are increased with the increase of the diameter and the rotation speed of the shoulder. The grain sizes tend to be more uniform from retreating side to advancing side when the rotational speed or shoulder diameter is increased.