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Thermoelectric Power Measurements on Duplex Stainless Steel Weldments

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Vehicle and Automotive Engineering 2 (VAE 2018)

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

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Abstract

In our research bead-on-plate autogenous TIG welds were prepared on 2 mm thick UNS S32205 (EN 1.4462) duplex stainless steel sheets using different shielding gases: argon, and argon+nitrogen shielding with +2 vol. % N2, +5 vol. % N2 and +10 vol. % N2 nitrogen content beside argon. The welds were reheated in argon atmosphere up to 1250 °C peak temperature, using Gleeble® 1500 thermomechanical simulator. Both in the as-welded and reheated state the austenite fraction, total nitrogen content and thermoelectric power (TEP) values were measured. Correlation was found between the austenite content in the weld metal, the total nitrogen content in the wed metal and the TEP value as a function of the used shielding gases and the subsequent reheating thermal cycle. We also attempted to differentiate between the total dissolved nitrogen and interstitial atomic nitrogen. This work is a part of an extended project in order to understand the sometimes controversial effects of nitrogen on duplex stainless steel welding.

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Acknowledgments

This paper has been supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences grant number: BO/00196/16/6 and by the National Research, Development and Innovation Office - NKFIH, OTKA PD 120865 (K. Májlinger).

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3. MT building, Budapest, 1111, Hungary

    Balázs Varbai & Kornél Májlinger

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  1. Balázs Varbai
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  2. Kornél Májlinger
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Correspondence to Balázs Varbai .

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Editors and Affiliations

  1. University of Miskolc , Miskolc, Hungary

    Károly Jármai

  2. University of Miskolc , Miskolc, Hungary

    Betti Bolló

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Varbai, B., Májlinger, K. (2018). Thermoelectric Power Measurements on Duplex Stainless Steel Weldments. In: Jármai, K., Bolló, B. (eds) Vehicle and Automotive Engineering 2. VAE 2018. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-75677-6_67

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  • DOI: https://doi.org/10.1007/978-3-319-75677-6_67

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-75676-9

  • Online ISBN: 978-3-319-75677-6

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