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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

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Author(s):
Fernanda Potomati [1] ; Leonardo Contri Campanelli [2] ; Paulo Sergio Carvalho Pereira da Silva [3] ; José Guilherme Alvarenga Batista Simões [4] ; Milton Sergio Fernandes de Lima [5] ; Álvaro José Damião [6] ; Claudemiro Bolfarini [7]
Total Authors: 7
Affiliation:
[1] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
[2] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
[3] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
[4] Instituto de Estudos Avançados. Departamento de Ciência e Tecnologia Aeroespacial - Brasil
[5] Instituto de Estudos Avançados. Departamento de Ciência e Tecnologia Aeroespacial - Brasil
[6] Instituto de Estudos Avançados. Departamento de Ciência e Tecnologia Aeroespacial - Brasil
[7] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
Total Affiliations: 7
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 22, n. 4 2019-09-05.
Abstract

The effect of a surface treatment by Nd:YAG laser irradiation on the fatigue behavior of Ti-6Al-4V ELI was studied. Axial fatigue tests were performed to obtain S-N curves in polished and laser treated conditions. Roughness measurements and scanning electron microscopy were used to characterize the features of the modified surface. A reduction in the fatigue strength of around 35% was obtained after the laser treatment of the material surface. Although the surface roughness was in the micrometer scale, a notch effect was suggested to be the reason for the deleterious influence of the laser on the fatigue strength. The reduction in the fatigue strength obligatory demands redesign of implants for laser modified surfaces of Ti-6Al-4V alloy. (AU)

FAPESP's process: 16/12995-5 - Fatigue of a metastable beta titanium alloy for application as biomaterial
Grantee:Leonardo Contri Campanelli
Support Opportunities: Scholarships in Brazil - Post-Doctoral