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Study of the effects of process parameters on deposited single track of M4 powder based direct energy deposition

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Abstract

The Direct energy deposition (DED) process has been a popular method for improving surface properties in mold industries. The deposited bead geometry and dilution depth, representing the thickness of the melted substrate mixed with deposited materials, play an important role in determining the mechanical properties of the deposited part. Therefore, selecting and controlling the DED process parameters is very important for obtaining the optimal deposited bead geometry. This study, investigated the effects of process parameters on deposited single-track geometry using AISI M4 powder. The cross-sectional profile of the deposited bead was analyzed to understand the effects of each processing condition on bead geometry. Moreover, a mathematical formula for bead geometry prediction was derived using the Response surface method (RSM), which can be used to effectively control the process variables to achieve the desired qualities.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Chonnam National University, Gwangju, 500-757, Korea

    Eun Mi Lee & Hi Seak Yoon

  2. Green Manufacturing Process Technology Center, KITECH, Gwangju, 500-460, Korea

    Gwang Yong Shin

  3. Division of Mechanical Engineering, Korea Maritime and Ocean University, Busan, 49112, Korea

    Do Sik Shim

Authors
  1. Eun Mi Lee
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  2. Gwang Yong Shin
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  3. Hi Seak Yoon
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  4. Do Sik Shim
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Corresponding author

Correspondence to Do Sik Shim.

Additional information

Recommended by Associate Editor Young Whan Park

Do-Sik Shim received Ph.D. in Mechanical Engineering from KAIST, Korea in 2010. He has been an Assistant Professor at Korea Maritime and Ocean University (KMOU) since 2017. His research interests include incremental and roll forming for sheet metal, direct energy deposition (DED) and structural analysis as well as optimal design.

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Lee, E.M., Shin, G.Y., Yoon, H.S. et al. Study of the effects of process parameters on deposited single track of M4 powder based direct energy deposition. J Mech Sci Technol 31, 3411–3418 (2017). https://doi.org/10.1007/s12206-017-0239-5

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  • DOI: https://doi.org/10.1007/s12206-017-0239-5

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