Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Analysis of residual stress and corrosion resistance of laser shock-processed 6012 and 6082 aluminium alloys
Year:2009
Research Areas
  • Mechanical engineering,
  • Construction materials
Information
Abstract
The paper provides a thorough analysis of a surface layer prior to and after Laser Shock Processing under different parameter conditions. Optimum conditions were determined using a factorial design aided with an analysis of variance (ANOVA). As the first experimental factor, pulse density with 900 and 2500 pulse/cm2 was chosen. The second factor was the type of material, i.e. aluminium alloys ENAW 6012 and ENAW 6082. Evaluation of different conditions of specimen treatment was made using three response variables, i.e. surface roughness, magnitude of residual stresses, and corrosion resistance given by pitting potential (Epitt). A thorough analysis of the modified surface layer was made with measurement of microhardness, and with images obtained in optical and electronic microscopy (SEM) and energy dispersion spectroscopy (EDS) to determine corrosion products around the pits formed after corrosion testing. The experiments confirmed characteristic influences of individual LSP parameters on properties of the treated material surfaces. ENAW 6012 aluminium alloy showed better corrosion resistance than ENAW 6082 alloy with lower pitting attack at its surface. Corrosion tests showed that a higher pulse density produces shifting of the pitting potential to more positive values, which ensures higher corrosion resistance from the viewpoint of preserving a passive protecting film on the surface layer.
International
Si
JCR
No
Title
Proceedings of SPIE. The International Society for Optical Engineering
ISBN
0277-786X
Impact factor JCR
0
Impact info
Volume
7131
10.1117/12.816643
Journal number
0
From page
713124
To page
713124
Month
ABRIL
Ranking
Participants
  • Participante: U. TRDAN (University of Ljubljana, Faculty of Mechanical Engineering Slovenia)
  • Participante: J. GRUM (University of Ljubljana, Faculty of Mechanical Engineering Slovenia)
  • Autor: Juan Antonio Porro Gonzalez (UPM)
  • Autor: Jose Luis Ocaña Moreno (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería y Aplicaciones del Láser
  • Centro o Instituto I+D+i: Centro Laser
  • Departamento: Física Aplicada a la Ingeniería Industrial
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)