Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Numerical-experimental analysis of the effect of surface oxidation on the laser transformation hardening of Cr-Mo steels
Year:2015
Research Areas
  • Physics chemical and mathematical,
  • Mechanical engineering
Information
Abstract
Laser surface hardening is a technology that enables important advantages to be obtained in comparison with conventional techniques in terms of accuracy of the heat affected zone and productivity. Nevertheless, the development of realistic and flexible models has to be fulfilled in order to control the effects of every set of process conditions. Despite many different models having been developed, very few of them deal with the increment of absorption related with the instantaneous value of the layer of oxide growth during the process in a non-protective atmosphere. This work analyzes the problem of oxide formation at the external surface using kinetic relations, whose parameters have been related with the process variables, considering non-equilibrium conditions. Then, the oxide thickness was associated with a value of absorption through an innovative formula that considers the path of the laser radiation in the interface oxide-base material. The thermal calculations obtained by this method have allowed phase changes to be predicted using Avrami law. Both thermal and metallurgical results for different process conditions have been compared with experimental data showing an excellent agreement.
International
Si
JCR
Si
Title
Applied Surface Science
ISBN
0169-4332
Impact factor JCR
2,538
Impact info
Datos JCR del año 2013
Volume
:10.1016/j.apsusc.2015.09.143
Journal number
From page
1236
To page
1243
Month
SEPTIEMBRE
Ranking
Participants
  • Autor: Francisco Cordovilla Baro (UPM)
  • Autor: Angel Garcia Beltran (UPM)
  • Autor: Jesús Dominguez (Ikergune)
  • Autor: Paula Sancho (Ikergune)
  • Autor: Jose Luis Ocaña Moreno (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ciencias de la Computación en la Educación y en la Representación del Conocimiento
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)