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Effective predictions of ultimate tensile strength, peak temperature and grain size of friction stir welded AA2024 alloy joints

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Abstract

A series of welds were made by friction stir welding (FSW) under different welding and rotation speeds. A 2D ultimate tensile strength (UTS) map was developed based on various experimental data to predict the UTS of friction stir welded AA2024 alloy joints. The accuracy of the UTS map was evaluated by comparing the estimated UTS with the corresponding experimental results from the FSW of the same material available in the open literature. Analytical models were developed to estimate the peak temperature and grain size in the nugget zone. The predicted optimal peak temperature and welding and rotation speeds for AA2024 were within the windows of 400–465 °C, 175–350 mm/min and 800–1,200 rpm, respectively, under which the joint tensile strength could be higher than 458 MPa (about 94.6 % of the base metal) and the estimated average grain sizes in the nugget zone were about 2–3.9 μm.

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, People’s Republic of China

    Z. H. Zhang, W. Y. Li & J. L. Li

  2. Department of Mechanical Engineering, University of South Carolina, Columbia, SC, 29208, USA

    Y. J. Chao

  3. College of Material Science and Engineering, Tianjin University, Tianjin, 300072, People’s Republic of China

    Y. J. Chao

Authors
  1. Z. H. Zhang
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  2. W. Y. Li
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  3. J. L. Li
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  4. Y. J. Chao
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Correspondence to W. Y. Li.

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Zhang, Z.H., Li, W.Y., Li, J.L. et al. Effective predictions of ultimate tensile strength, peak temperature and grain size of friction stir welded AA2024 alloy joints. Int J Adv Manuf Technol 73, 1213–1218 (2014). https://doi.org/10.1007/s00170-014-5926-0

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  • DOI: https://doi.org/10.1007/s00170-014-5926-0

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