Abstracts Book - IMRC 2018

• SD3-O014
EFFECT OF THE BORIDING AND THE SHOT-PEENING IN THE
RESISTENCE TO THE FATIGUE OF THE STEEL AISI 8620
Alonso Salazar Garibay 1 , Araceli Vázquez Rodríguez 2 , Luis Gabriel Bermudez Rodriguez 3 ,
Alfredo Márquez Herrera 2
1 Instituto Politécnico Nacional - IPN, UPIIG, Mexico. 2 Universidad de Guanajuato, División de
Ciencias de la Vida, Mexico. 3 Universidad de la Salle, Universidad de la Salle Bajío, Mexico.
Shot-peening is a method widely used in industrial practice to improve the
mechanical properties of engineering components such as: increased fatigue
resistance, contact fatigue, resistance to fatigue by corrosion and stress. The
objective of the research was to determine the effect of shot-peening on the
improvement of the bordered layer of AISI 8620 steel. First, the characterization
of the surface of the substrate exposed to the box boring treatment is studied.
The formation of hard layers type Fe 2 B were obtained in a temperature range of
1173, 1227 and 1273 K with exposure times of 6, 7 and 8 h. As a result we have
the evaluation of the growth kinetics of the Fe 2 B layers bordered on the AISI
8620 surface by X-ray diffraction (XRD and Dispersion Energy Spectroscopy
(EDS), hardness measurements, residual stress measurements, fatigue by
rotating flexion, likewise, the adhesion of the layers is evaluated qualitatively by
the Rockwell C. technique.
Acknowledgment:
This work has been supported by the research grant of Universidad de
Guanajuato at Mexico. The authors wish to AAM Company for their valuable
cooperation.
Keywords: Shot peening, Boriding, Fatigue
Presenting authors email: avazquezr@upbicentenario.edu.mx