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Fatigue behavior of Ti-6Al-4V alloy under treatment of ionic plasma implantation (3IP)


This research project proposes updating the equipment INSTRON 8801 - which has been continuously used by Department of Materials and Technology (DMT) at UNESP of Guaratinguetá, used to develop infinite undergraduate and graduate works and many researches that generated publications from 2000 until today. The blue hill software will be updated as well as some hardware and its hydraulic system so that the equipment will have its life extended and will continue to help new developments beyond the proposed in this project. Universal INSTRON 8801 machine was acquired during FAPESP Project 1999/06549-5 and meets all the research group "Fatigue and Aeronautical Materials" UNESP campus Guaratingueta, 70% of DMT professors, other professors of campus professor at USP Lorena. Particularly, the goal of this project is study the influence of 3IP treatment on fatigue behavior of Ti-6Al-4V alloy. The AA 7175-74 alloys, AISI 4340, Custom 465 and its fatigue behavior have been the subject of studies in this research group. The main objective is to increase the efficiency of these materials (used in aircraft structures) through surface treatments. Optimization needs and reduce costs involved in the production and use of aeronautical components here are based on tests involving different microstructural conditions under static or dynamic loading. Fatigue tests are considered as an effective indicator of mechanical performance of materials under different conditions of thermomechanical treatments and/or thermochemical also allowing the analysis of macroscopic behavior and possible microstructural changes. For this, they performed axial fatigue tests consecutively with microstructural analysis of samples with and without treatment using the techniques of X-ray diffraction, optical microscopy, scanning electron microscopy and transmission, microhardness measurements and residual stress. INSTRON equipment is fundamental for work development done in the research group without which behavioral studies on fatigue of primary and secondary aeronautical applications materials may not be realized, which strongly justifies the need for the requested update after 16 years enabling projects research IC, MS, PhD and Postdoctoral. (AU)

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