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A new severe plastic deformation method: thin-walled open channel angular pressing (TWO-CAP)

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Abstract

In this study, a novel severe plastic deformation method, named as thin-walled open channel angular pressing (TWO-CAP), was developed and applied to AZ31 magnesium alloy beams in U-type cross-sectional shape. First of all, the principles of the method with all parameters were determined, and the analytical model of the system was generated, and then the study was supported with the numerical analysis. Then, a proper experimental setup was established by considering theoretic outputs. After that, AZ31 magnesium alloy specimens were machined from bulk material in U-type shape as to fit the die channel, and then these specimens were annealed and pressed along the TWO-CAP die. Following the experimental studies, the specimens were tested in order to define the changes in mechanical and microstructural properties. In this stage, the tension test and hardness test were applied to determine the mechanical properties, while optical microscope, scanning electron microscope, energy dispersive spectrometry, X-ray diffraction, and transmission electron microscope analyses were applied to see the changes in microstructure. As a result, an improvement on strength, hardness, and toughness was observed depending on the changes on the microstructure and grain refinement due to the large plastic deformation.

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Acknowledgments

We would like to thank Prof. Dr. Mehmet UÇAR for his support for the laboratory studies. This work was supported by the Marmara University Scientific Research Project within the project number FEN-C-DRP-120417-0183 and FEN-A-090217-0045.

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Authors and Affiliations

  1. Mechanical Engineering Department, Faculty of Engineering, Karamanoglu Mehmetbey University, Karaman, Turkey

    Mehmet Şahbaz

  2. Faculty of Engineering, Mechanical Engineering Department, Marmara University, İstanbul, Turkey

    Mehmet Şahbaz & Aykut Kentli

  3. Asım Kocabıyık Vocational School, Machine and Metal Technology Department, Kocaeli University, Kocaeli, Turkey

    Hasan Kaya

Authors
  1. Mehmet Şahbaz
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  2. Hasan Kaya
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  3. Aykut Kentli
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Correspondence to Mehmet Şahbaz.

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Şahbaz, M., Kaya, H. & Kentli, A. A new severe plastic deformation method: thin-walled open channel angular pressing (TWO-CAP). Int J Adv Manuf Technol 106, 1487–1496 (2020). https://doi.org/10.1007/s00170-019-04748-1

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