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Effect of Welding Consumables on Fatigue Performance of Shielded Metal Arc Welded High Strength, Q&T Steel Joints

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Abstract

Quenched and Tempered (Q&T) steels are widely used in the construction of military vehicles due to their high strength-to-weight ratio and high hardness. These steels are prone to hydrogen-induced cracking in the heat affected zone (HAZ) after welding. The use of austenitic stainless steel consumables to weld the above steel was the only remedy because of higher solubility for hydrogen in austenitic phase. Recent studies proved that high nickel steel and low hydrogen ferritic steel consumables can be used to weld Q&T steels, which can give very low hydrogen levels in the weld deposits. In this investigation an attempt has been made to study the effect of welding consumables on high cycle fatigue properties of high strength, Q&T steel joints. Three different consumables namely (i) austenitic stainless steel, (ii) low hydrogen ferritic steel, and (iii) high nickel steel have been used to fabricate the joints by shielded metal arc (SMAW) welding process. The joints fabricated using low hydrogen ferritic steel electrodes showed superior fatigue properties than other joints.

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Acknowledgments

The authors are thankful to Armament Research Board (ARMREB), New Delhi for funding this project work (Project No. MAA/03/41), M/s Combat Vehicle Research Development Establishment (CVRDE), Avadi, Chennai for providing base material and extending fabrication facility for joint fabrication and Department of Manufacturing Engineering, Annamalai University, for providing testing facility for this investigation.

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Authors and Affiliations

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

    G. Magudeeswaran & V. Balasubramanian

  2. Metal Joining Section, Defence Metallurgical Research Laboratory (DMRL), Kanchanbagh (P.O.), Hyderabad, 560 058, Andhra Pradesh, India

    G. Madhusudhan Reddy

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  1. G. Magudeeswaran
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  2. V. Balasubramanian
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  3. G. Madhusudhan Reddy
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Correspondence to V. Balasubramanian.

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Magudeeswaran, G., Balasubramanian, V. & Madhusudhan Reddy, G. Effect of Welding Consumables on Fatigue Performance of Shielded Metal Arc Welded High Strength, Q&T Steel Joints. J. of Materi Eng and Perform 18, 49–56 (2009). https://doi.org/10.1007/s11665-008-9253-1

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  • DOI: https://doi.org/10.1007/s11665-008-9253-1

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