Modelling the influence of the temperature on the subsurface deformation of an aluminum pin during a wear test,

MARIO ROBERTO ROSENBERGER; FORLERER, E.; SCHVEZOV, C. E.

San Francisco. USA

Conferencia; 138º TMS Annual Meeting & Exhibition. TMS 2009; 2009

<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> During the wear of aluminum pins under dry sliding it is normally observed a lot of plastically deformed material placed on the ending borders. This deformation is located mainly in the subsurface. The influence of the temperature on the subsurface deformation was studied using finite element analysis. A three-dimensional model was employed, and temperature dependent properties were assumed. Loads were applied simulating a test performed in a pin-on-ring machine. An elasto-plastic model was employed with small deformation in the plastic range. A sudden subsurface deformation was observed when the tangential load achieves a well determined value defined as the critical load. This critical load increases when the temperature diminishes. The comparison of these results with experiments performed on A1060 alloys reinforced with 15 % alumina particles shows little deviation between predictions and experiments which may be attributed to the difference of mechanical properties between the alloys.