Influence of Welding Speed on Microstructure and Oxidation Behaviour of Laser Welded Austenitic Stainless Steels

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概要

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• Microstructure and high temperature oxidation behaviour of laser weldments of 316L and 316LN steels have been found to influence by the variation in welding speed. Ferrite content and ferrite morphology change for both type 316L and 316LN laser weld with welding speed. Laser weldments consisting mainly of weld metal and base metal region of two austenitic stainless steels (ASS) were oxidized in dry air at 973 K for 240 h. Steel weldment was found to have a higher oxidation rate when joined with lower welding speed of 11.66 mm/s as compared to 25 mm/s speed. On the other hand, 316LN steel weldments have indicated much superior oxidation resistance property under similar condition. Oxidation behaviour of two ASS weldments has been correlated with microstructure and oxide scales formed over the different regions have been characterized by scanning electron microscopy (SEM/EDXA).

• 社団法人 日本鉄鋼協会の論文
• 2006-01-15

著者

• Pal Tapan

  Metallurgical Engg. Dept. Jadavpur University

• Pal Tapan

  Metallurgical Engineering Department Jadavpur University

• SAMANTA Sisir

  Research & Control Laboratory, Alloy Steels Plant, SAIL

• MITRA Swapan

  Metallurgical and Materials Engineering Department, National Institute of Technology

• Mitra Swapan

  Metallurgical And Materials Engineering Department National Institute Of Technology

• Samanta Sisir

  Research & Control Laboratory Alloy Steels Plant Sail

関連論文

• Prediction of Acicular Ferrite from Flux Ingredients in Submerged Arc Weld Metal of C-Mn Steel
• Influence of Welding Speed on Microstructure and Oxidation Behaviour of Laser Welded Austenitic Stainless Steels

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