Analysis on the Friction and Wear Properties of Friction Stir Jointing for 7022 Aluminum Alloy Joining Region

Abstract:

The friction and wear properties of the friction stir jointing 7022 aluminum alloy joining region were tested in this paper. The friction coefficients and wearing capacities of the joining regions under different joining process parameters were obtained. The experiment results showed that the friction coefficients and wearing capacities of the joining regions had a certain relationship with the hardness, but not became direct ratio relation. The friction coefficient of the joining region was smaller than that of the base metal. This main reason was base metal was lath-shaped grain, and the joining region was isometric crystal. The wear volume under 400/30 parameters was minimum. The wear volume was greatly influenced by the hardness of the joining region, but was not direct proportion relationship. Due to the random factors influence in friction process, the law of the friction coefficient reflecting friction and wear was not the same with the law of wear volume reflecting friction and wear. The friction form was abrasive wear and adhesive wear.

• Periodical: Key Engineering Materials (Volume 693)
• Pages: 718-725
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.693.718
• Online since: May 2016
• Authors: H.F. Wang*, J.L. Wang, W.W. Song, Dun Wen Zuo, D.L. Shao, Q.Q. Zhu
• Keywords: 7022 Aluminum Alloy, Friction, Friction Coefficient, Friction Stir Jointing, Solar Cell Frame, Solar Support, Wear, Wear Capacity

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