Abstracts Book - IMRC 2018

• SE4-P014
ANALYSIS OF THE SUPERFICIAL EVOLUTION AND SUB-SURFACE
ABSORPTION OF HYDROGEN ON STEEL API 5L X65
José Damián Calan Canche 1 , Rafael García Hernández 1 , Jorge Antonio Gonzalez Sanchez 2 , Luis
Román Dzib Pérez 2 , Orest Bilyy 2 , Manuel Alberto Tun Serrano 3
1 Universidad Michoacana de San Nicolás de Hidalgo, Instituto de Investigación en Metalurgia y
Materiales, Mexico. 2 Universidad Autónoma de Campeche, Centro de Investigación en
Corrosión, Mexico. 3 Universidad Autónoma de Campeche, , Mexico.
Today there is a lot of scientific research on the effect of hydrogen on materials,
this is because of the large number of materials that interact with it and its great
boom as a source of clean fuel. In the oil industry API 5L X65 steels are used for
the transport, storage and distribution of gas, oil and its derivatives. In service
conditions these steels are susceptible to corrosion, due to the large number of
environments to which they are subjected (atmospheric, marine, etc.). An
insidious problem with these steels is their susceptibility to suffer hydrogen
damage, in oxygen free electrolytes the corrosion process or the cathodic
protection systems promote the formation of atomic hydrogen that is absorbed
and diffuses to the volume of the material, inducing the formation or growth of
cracks, which in many cases produce the failure in conditions of service.
This study focused on the effect of a non-conventional quenching heat
treatment on the kinetic of hydrogen surface evolution and sub-surface
absorption on API 5L X65 steel. The evolution of atomic hydrogen occurred
under cathodic charge in NS4 solution to -200 mV with respect to open circuit
potential (OCP), the chroamperometries were obtained at different time
intervals. The current time series obtained the samples analyzed were used to
determine the influence of non-conventional quenching heat treatment on the
kinetics of the hydrogen evolution. The susceptibility to atomic hydrogen
absorption was determined under anodic charge with records of current for one
hour. A concentration of atomic hydrogen absorbed at different times of
hydrogenation was obtained.
Keywords: steel, atomic hydrogen, absorption
Presenting authors email: ccdj01@hotmail.com