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题名: Analysis and Modeling of Friction Stir Processing-Based Crack Repairing in 2024 Aluminum Alloy
作者: Ren, Jun-Gang;  Wang, Lei;  Xu, Dao-Kui;  Xie, Li-Yang;  Zhang, Zhan-Chang
发表日期: 2017-3-1
摘要: A friction stir processing-based method was used to repair cracks in the 2024 aluminum alloy plates. The temperature field and plastic material flow pattern were analyzed on the basis of experimental and finite element simulation results. Microstructure and tensile properties of the repaired specimens were studied. The results showed that the entire crack repairing was a solid-phase process and plastic materials tended to flow toward the shoulder center and then resulted in the repairing of cracks. Meanwhile, the coarse grain structures were refined in repaired zone (RZ), while the grains in thermal-mechanically affected zone and heat-affected zone were elongated and driven to grow up. Meanwhile, large phases are crushed into small particles and dispersed inside the RZ. Finally, the strength of the repaired specimens can be restored dramatically and their ductility can be partially restored. After heat treatment, the tensile properties of the repaired specimens can be further enhanced.
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Recommended Citation:
Ren, Jun-Gang,Wang, Lei,Xu, Dao-Kui,et al. Analysis And Modeling Of Friction Stir Processing-based Crack Repairing In 2024 Aluminum Alloy[J]. Acta Metallurgica Sinica-english Letters,2017,30(3):228-237.

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