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Effect of welding processes on tensile and impact properties, hardness and microstructure of AISI 409M ferritic stainless joints fabricated by duplex stainless steel filler metal

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Abstract

The effect of welding processes such as shielded metal arc welding, gas metal arc welding and gas tungsten arc welding on tensile and impact properties of the ferritic stainless steel conforming to AISI 409M grade is studied. Rolled plates of 4 mm thickness were used as the base material for preparing single pass butt welded joints. Tensile and impact properties, microhardness, microstructure and fracture surface morphology of the welded joints have been evaluated and the results are compared. From this investigation, it is found that gas tungsten arc welded joints of ferritic stainless steel have superior tensile and impact properties compared with shielded metal arc and gas metal arc welded joints and this is mainly due to the presence of finer grains in fusion zone and heat affected zone.

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Authors and Affiliations

  1. Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, 608 002, Annamalai Nagar, Tamil Nadu, India

    A. K. Lakshminarayanan (Doctor Candidate), K. Shanmugam & V. Balasubramanian

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  1. A. K. Lakshminarayanan
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  2. K. Shanmugam
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  3. V. Balasubramanian
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Correspondence to A. K. Lakshminarayanan.

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Lakshminarayanan, A.K., Shanmugam, K. & Balasubramanian, V. Effect of welding processes on tensile and impact properties, hardness and microstructure of AISI 409M ferritic stainless joints fabricated by duplex stainless steel filler metal. J. Iron Steel Res. Int. 16, 66–72 (2009). https://doi.org/10.1016/S1006-706X(10)60013-1

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  • DOI: https://doi.org/10.1016/S1006-706X(10)60013-1

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