INFLUENCE OF ALLOYING ELEMENTS OF WELD METAL ON MECHANICAL BEHAVIOR OF HSLA-X70 WELDS

Type : Article de conférence
Auteur(s) :  BENLAMNOUAR Mohamed Farid, BOUTAGHANE Amar, GOSSMINE Mokrane, BENSAID Nabil, BADJI RIAD
Année :  2016
Domaine : Sciences des matériaux
Conférence: 2016 3rd International Conference on Mechanical Properties of Materials (ICMPM)
Lieu de la conférence:  Venice, Italie
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés :  alloying element, Weld metal, HSLA-X70, TIG welding, mechanical behavior

Résumé : 

In the pipeline industry, the alloying elements are continually evolving as a function of weldability and reliability of steels. For this reason, metallurgists discover and develop every day new base materials like HSLA steels and efficient electrodes. We propose in this work to study the influence of chromium and molybdenum in C-Mn filler metal, hoping to demonstrate their microsturctural evolution and mechanical behavior on welds of high strength steels HSLA-X70. The mechanical properties included hardness, impact and tensile strength was investigated. The results show that, optimal properties of welds correspond to the existence of both molybdenum and chromium in weld metal with proportions varying between 1% and 2.5%.