DRY WEAR TEST STUDY OF SUPERMARTENSITIC STAINLESS STEEL 13Cr5Ni2Mo FOR OIL AND GAS APPLICATION

Auteurs :  C.E. RAMOUL, S. Meddah, S.Achouri, K. SLIMANI, M.I. Tlili
Année : 2017
Domaine : Métallurgie
Type : Communication
Conférence: CONFERENCE ON ADVANCES IN MECHANICAL ENGINEERING ISTANBUL 2017 – ICAME2017
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF : 
Mots clés : microstructure, 13Cr5Ni2Mo SMSS, wear, friction

Résumé : 

Due to the increasing need for more cost-effective use of materials, supermartensitic stainless steels have been developed over the past 20 years and are ever more applied in the oil and gas industries to replace highly alloyed alternatives. In practice, the supermartensitic steels are used in the quenched and tempered state. In this study, we were interested in the frictional wear behavior of a supermartensitic stainless steel 13Cr5Ni2Mo, this steel intended for the manufacture of pipe used in the petroleum field. Several means of investigation have been used, namely thermal analysis by DSC on samples after homogenization treatment at 1050 ° C for 20 hours. The microstructure and the wear mechanism were studied using scanning electron microscopy. We choised a pin-on-disc tribometer under dry conditions against an Al2O3 alumina ball. All the tests were carried after quenching at 1050 °C and tempering at 550 °C, 2 hours (treatment which gave better hardness properties obtained by micro-indentation) at ambient temperature while varying the applied load of 2N, 6N to 10N. A one-off analysis of wear debris by EDS at SEM was also completed. The results obtained showed that the coefficient of friction of the 13Cr5Ni2Mo steel against the Al2O3 ball decreases with the decrease of the load. The mechanism wear observed in the SEM micrographs used surfaces is abrasive, adhesive, delamination and oxidation wear.