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Effect of Laser Heat Treatment and Nitrogen Content in Shielding Gas on Precipitation of Widmanstätten Austenite in Lap Laser Welds of Duplex Stainless Steels

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TMS 2022 151st Annual Meeting & Exhibition Supplemental Proceedings

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

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Abstract

Duplex stainless steel attracts attention because of its excellent mechanical properties and corrosion resistance, which characterize both the ferrite and the austenite phases. However, it’s well known that the welds are easily affected by the amount of heat input and that the performance may be deteriorated due to the imbalance of the phase. In particular, when laser welding is used, this phenomenon becomes more pronounced due to the effects of rapid solidification. This study investigated the efficiency of laser post weld heat treatment by laser beam, focusing on the austenite stabilizing effect of nitrogen, adding different nitrogen contents to the shielding gas for various lap laser welding. The effects of the two methods of promoting the precipitation of austenite and the influence on the precipitation morphology are compared. In addition, the tensile test was used to summarize the relationship between the amount of austenite precipitated and mechanical strength. After that, the Widmanstätten austenite in the laser beam welds was observed stereoscopically by etching and continuous sectioning.

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References

  1. Omura T, Kushida T, Komizo Y (1999) Nitrogen distribution on rapid solidification in laser welded duplex stainless steels. Q J Jpn Weld Soc 17(3):448–455

    Article  CAS  Google Scholar 

  2. Sato N, Adachi Y, Kawata H, Kaneko K (2012) Topological approach to ferrite/martensite dual-phase microstructures. ISIJ Int 52(7):1362–1365

    Article  CAS  Google Scholar 

  3. Kokawa H, Okada J, Kuwana T (1993) Nitrogen absorption and microstructure of duplex stainless steel weld metal. Weld Int 7(5):384–389

    Article  Google Scholar 

  4. Fukui F (1981) Weldability of duplux stainless steel. J Jpn Weld Soc 50(3):235–240

    Article  CAS  Google Scholar 

  5. Nakade K, Ohe K, Kuroda T (2001) Precipitation behavior of σ phase for reheated duplex stainless steel weld metal. Q J Jpn Weld Soc 19(1):92–99

    Article  CAS  Google Scholar 

  6. Lagerberg G, Wolff EG (1958) The effects of grain size and texture on the internal friction in α-iron due to interstitial solutes. Acta Metall 6(2):136–137

    Article  Google Scholar 

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Correspondence to Yunxing Xia .

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Xia, Y., Amatsu, K., Miyasaka, F., Mori, H. (2022). Effect of Laser Heat Treatment and Nitrogen Content in Shielding Gas on Precipitation of Widmanstätten Austenite in Lap Laser Welds of Duplex Stainless Steels. In: TMS 2022 151st Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-92381-5_2

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