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Effect of Thermal Aging on the Corrosion and Mechanical Properties of Friction Stir Welded 250 Grade Maraging Steel

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Friction Stir Welding and Processing IX

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The main objective of this work is to investigate the microstructure and mechanical properties of friction stir welded 250 grade Maraging steel. Successful welds were made using W-25%Re-4%HfC pin tools in forge control mode at a rotational speed of 200 rev·min−1 and a travel speed of 50.8 mm·s−1. Retained austenite was identified in the weld nugget. Formation of retained austenite in the weld nugget is strongly influenced by the weld process parameters. The effects of post weld aging on the corrosion and mechanical properties of the welds were evaluated and compared to the parent material. Post-weld aging at 482 °C for 15 h resulted in peak hardness across the weld nugget.

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Acknowledgements

The authors gratefully acknowledge the financial support provided by the National Science Foundation under the contract number 157074. The authors also acknowledge the graduate students (Sushma Karanam, Lukmon Aminu, Reeha Budatla, and Oladimeji Oladepo) for their help with the specimen preparation.

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Authors and Affiliations

  1. Arbegast Materials Processing and Joining Laboratory, Department of Materials and Metallurgical Engineering, South Dakota School of Mines and Technology, 501 E. St. Joseph St, Rapid City, SD, 57701, USA

    Bharat K. Jasthi, Todd Curtis, Christian A. Widener, Michael West & Brendan Kellogg

Authors
  1. Bharat K. Jasthi
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  2. Todd Curtis
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  3. Christian A. Widener
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  4. Michael West
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  5. Brendan Kellogg
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Corresponding author

Correspondence to Todd Curtis .

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Editors and Affiliations

  1. Brigham Young University , Provo, Utah, USA

    Yuri Hovanski

  2. Denton, Texas, USA

    Rajiv Mishra

  3. Tohoku University , Sendai, Japan

    Yutaka Sato

  4. Pacific Northwest National Laboratory , Richland, Washington, USA

    Piyush Upadhyay

  5. University of Wisconsin Green Bay , Green Bay, Wisconsin, USA

    David Yan

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© 2017 The Minerals, Metals & Materials Society

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Jasthi, B.K., Curtis, T., Widener, C.A., West, M., Kellogg, B. (2017). Effect of Thermal Aging on the Corrosion and Mechanical Properties of Friction Stir Welded 250 Grade Maraging Steel. In: Hovanski, Y., Mishra, R., Sato, Y., Upadhyay, P., Yan, D. (eds) Friction Stir Welding and Processing IX. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-52383-5_1

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