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Ti-6Al-4V alloy fatigue phenomenon study modified by plasma immersion ion implantation treatment (PIII)

Grant number: 15/00331-2
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): August 01, 2015
Effective date (End): November 30, 2018
Field of knowledge:Engineering - Aerospace Engineering
Acordo de Cooperação: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Herman Jacobus Cornelis Voorwald
Grantee:Verônica Mara de Oliveira Velloso
Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil

Abstract

Titanium alloys are versatile and widely applicable as structural materials. Several studies aim to increase gas turbine efficiency through optimizing the surface treatment using mainly Ti-6Al-4V. The optimization and reducing costs needs involved in the aeronautical components production and using are based in different microstructural conditions under static or dynamic loading tests. The fatigue tests are treated as an effective indicator of the materials performance under different thermomechanical treatments and/or thermochemical conditions, allowing also macroscopic behavior and possible microstructural changes behavior.In this research, it is intended to study the Ti-6Al-4V alloy behavior subjected to nitrogen addition by 3IP superficial treatment under fatigue conditions. Thus, rotating bending tests will be performed, considering the Ti-6Al-4V Widmanstätten characteristic configuration. The study will be complemented with microstructural analysis of untreated and treated samples using X-ray diffraction, optical microscopy, scanning and transmission electron microscopy techniques, microhardness and residual strength measurements. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BASTOS, YARA COELHO; FERNANDES, MARTIN FERREIRA; VELLOSO, VERONICA MARA DE OLIVEIRA; MINTO, THIAGO ALEXANDRE; VOORWALD, HERMAN JACOBUS CORNELIS. Plasma immersion ion implantation and shot peening influence on the fatigue strength of AA 7050-T7451 aluminum alloy. ENGINEERING RESEARCH EXPRESS, v. 2, n. 1, p. 9-pg., . (15/00331-2, 19/02125-1)
OLIVEIRA, V. M. C. A.; CIOFFI, M. O. H.; BARBOZA, M. J. R.; LANDERS, R.; SCHMITT, B.; TAPIA, D. C. A. R.; VOORWALD, H. J. C.. Plasma immersion ion implantation (PIII) influence on Ti-6Al-4V alloy: Frequency effect. INTERNATIONAL JOURNAL OF FATIGUE, v. 109, p. 157-165, . (15/00331-2)
OLIVEIRA, V. M. C. A.; NOZAKI, L.; FERNANDES, M. F.; CIOFFI, M. O. H.; OLIVEIRA, R.; MARTINEZ, L. G.; BARBOZA, M. J. R.; VOORWALD, H. J. C.. Influence of Plasma Immersion Ion Implantation on Ti-6Al-4V Alloy Tensile-Tensile Fatigue Behavior: The Introduction of Shot Peening as a Pretreatment. Journal of Materials Engineering and Performance, v. N/A, p. 16-pg., . (15/00331-2)
VELLOSO, VERONICA; NOZAKI, LEONARDO; TAPIA, DIEGO; CIOFFI, MARIA ODILA; OLIVEIRA, ROGERIO; BARBOZA, MIGUEL; VOORWALD, HERMAN; HENAFF, G. Fatigue behavior of Ti-6Al-4V alloy modified by plasma immersion ion implantation: temperature effect. CSNDD 2012 - INTERNATIONAL CONFERENCE ON STRUCTURAL NONLINEAR DYNAMICS AND DIAGNOSIS, v. 165, p. 6-pg., . (15/00331-2)

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