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Effect of Filler Metal Mechanical Properties on Fatigue Behaviour Welded Joints

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Abstract

Our objective is to show the effect of filler metal on crack propagation and find the best one under fatigue loading. The base metal used was A510AP steel. The welding process used was manual welding with coated electrodes and automatic arc welding. The three filler metals used were GMoSi, GCrMo1Si, and G694M. Compact tension CT50 specimen was used to evaluate the fatigue crack growth behaviour. Filler metals-fusion zones, as well as heat affected zone and base metal were compared. The results showed that, for the over-matched filler metal the crack growth rate (CGR) is low when the mismatch (M) is near unity. For M greater to unity; the CGR is high, and the effect of the over-matching on CGR is not beneficial. For the under-matched filler metal, the CGR is high. We recorded that the crack did not deviate from its path. We concluded that the right choice is the over-matched filler metal with the M value near unity.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Laboratory LMSR, University Djilali Liabes Sidi Bel Abbes, PB 89 ITMA, Sidi Bel Abbes, Algeria

    Abdelkader Alioua, Benattou Bouchouicha & Mokhtar Zemri

  2. Laboratory of Mechanics of Lille, CNRS UMR 8107, Ecole Polytech’Lille, University of Lille, Lille, France

    Abdellatif IMAD

Authors
  1. Abdelkader Alioua
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  2. Benattou Bouchouicha
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  3. Mokhtar Zemri
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  4. Abdellatif IMAD
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Correspondence to Benattou Bouchouicha.

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Alioua, A., Bouchouicha, B., Zemri, M. et al. Effect of Filler Metal Mechanical Properties on Fatigue Behaviour Welded Joints. Trans Indian Inst Met 71, 977–984 (2018). https://doi.org/10.1007/s12666-017-1231-6

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  • DOI: https://doi.org/10.1007/s12666-017-1231-6

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