Study of creep of ti-6al-4v alloy using plasma immersion ion implantation (PIII)

Abstract

This study aims to investigate the creep resistance of the Ti-6Al-4V alloy after surface modification by plasma immersion ion implantation (PIII). For the PIII treatment it was used nitrogen gas (ion implantation) to the formation of plasma, the material was treated for 100 minutes. After PIII treatment the samples were analyzed using the techniques of X-ray diffraction, spectrometry energy dispersive X-ray and atomic force microscopy. The creep tests were realized at 600°C, at constant load of 250 and 319 MPa. After the creep tests the samples were analyzed by optical microscopy and scanning electron microscopy. By chemical analysis by X-ray and EDS it is possible to determinate the Ti2N on the surface. Through the study of the creep curves it is observed an increasing in creep resistance of the alloy after PIII treatment. Copyright © (2010) by Associação Brasileira de Metalurgia Materiais e Mineração (ABM).

Keywords