PIII shot peening, pre and post treated influence on Ti-6Al-4V lifetime during fatigue process

• Grant number: 17/23796-6
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2018
• End date: December 31, 2019
• Field of knowledge: Engineering - Aerospace Engineering
• Principal Investigator: Herman Jacobus Cornelis Voorwald
• Grantee: Natália Celestino de Campos
• Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil

Abstract

Ti-6Al-4V alloy is widely used in aeroespace industry due to its mechanical properties. Due to its importance in this area, this work will study the superficial treatments influence, PIII + shot peening and shot peening + PIII on Ti-6Al-4V alloy fatigue behavior. Thus, all the samples, including the ones received without any treatment, will be submitted to tensile tests and rotating bending fatigue test. In order to complement the study, Vickers microhardness measures will be carried out along the cross section of all the specimens, as well as the characterization by X-ray diffraction and the microstructural changes will be observed by optical microscopy (OM) and scanning electron microscopy (SEM). (AU)