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Influence of nickel and manganese on microstructure and mechanical properties of shielded metal arc-welded API-X80 steel

Jaberi, F. S ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1007/s11665-011-0021-2
  3. Publisher: 2012
  4. Abstract:
  5. Microstructure developments of X80 weld metal by the addition of different amounts of alloying elements such as nickel and manganese to the covering of electrodes were investigated. For this reason, samples were welded with electrodes that Ni value has changed between 0.8 and 3.5% in two critical amounts of Mn 0.7 and 1.6. Optical microscopy and scanning electron microscopy were applied for peer investigation of microstructure. Different phase percentages were obtained by Clemex software and compared in all samples. Results indicated that Ni and Mn change weld microstructure in the as-deposited zone and reheated part and corresponding to each alloying element concentration, amount of acicular ferrite, as a determining factor for mechanical properties, were changed
  6. Keywords:
  7. Pipe line ; Acicular ferrite ; API-X80 ; Critical amount ; Element concentrations ; Microstructure and mechanical properties ; Microstructure development ; Shielded metals ; Weld metal ; Weld microstructures ; Alloying ; Ferrite ; Manganese ; Mechanical properties ; Microstructure ; Nickel ; Optical microscopy ; Scanning electron microscopy ; Welding ; Welding electrodes ; Alloying elements
  8. Source: Journal of Materials Engineering and Performance ; Volume 21, Issue 7 , July , 2012 , Pages 1447-1454 ; 10599495 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs11665-011-0021-2