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Effect of Filler Metal Mechanical Properties on Fatigue Behaviour Welded Joints

  • Abdelkader Alioua
  • Benattou Bouchouicha
  • Mokhtar Zemri
  • Abdellatif IMAD
Technical Paper

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.

Keywords

Yield stress Fatigue crack growth Stress intensity factor Crack growth path Overmatch Undermatch 

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Copyright information

© The Indian Institute of Metals - IIM 2017

Authors and Affiliations

  • Abdelkader Alioua
    • 1
  • Benattou Bouchouicha
    • 1
  • Mokhtar Zemri
    • 1
  • Abdellatif IMAD
    • 2
  1. 1.Department of Mechanical Engineering, Laboratory LMSRUniversity Djilali Liabes Sidi Bel AbbesSidi Bel AbbesAlgeria
  2. 2.Laboratory of Mechanics of Lille, CNRS UMR 8107, Ecole Polytech’LilleUniversity of LilleLilleFrance

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