INVESTIGADORES
ROSENBERGER Mario Roberto
congresos y reuniones científicas
Título:
2.1.2.7 Wear of different aluminum matrix composites under conditions that generate a mechanically mixed laye
Autor/es:
MARIO ROBERTO ROSENBERGER; SCHVEZOV, C. E.; FORLERER, E.
Lugar:
San Diego, CA, USA.
Reunión:
Congreso; 15th International Conference on WEAR OF MATERIALS; 2005
Institución organizadora:
WOM Steering Committee and Elsevier
Resumen:
Wear experiments in a pin-on-ring apparatus were
performed using aluminum matrix composite, in which the matrix alloy AA6061,
was reinforced with Al2O3, B4C, Ti3Al, and B2Ti in volume
fractions ranging from 5% to 15%. The wear conditions generate in all cases a
Mechanically Mixed Layer (MML). The results were compared to those obtained
with the non-reinforced alloy, which for the same conditions does not form the
MML. The improvement of the wear properties was substantial, decreasing the
wear rate in two orders of magnitude,
result that is independent of volume
fraction and nature of the reinforcement. The analysis of the surface and
subsurface of the worn samples shows
defects and presence of Iron in the MML. These results indicate that different
type of reinforcement can generate MMLs with similar
wear resistance. Moreover, they are used
to introduce new elements of analysis for the development of a mechanism of
formation of the MML.