Caracterização microestrutural por EBSD da liga Ti-6Al-4V recoberta com filme de SiC/Cr depositado por processo HiPIMS antes e após ensaios de fluência

Materia

article

Tarcila Sugahara¹  Fabiano Emmanuel Montoro²  Renata Jesuina Takahashi¹  Danieli Aparecida Pereira Reis¹ 

[1] Universidade Federal de São Paulo;CNPEM

关键词: EBSD;    Ti-6Al-4V;    Creep;    SiC coating;   

DOI  :  10.1590/S1517-707620220001.1359

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

The application of a SiC/Cr film in Ti-6Al-4V alloy for the aerospace industry aims to chemically protect the action of oxygen in the titanium alloy, and to increase the creep life and fracture time and reduce the creep rate of plastic deformation alloy compared to unprotected alloy. The objective of this work was to investigate and evaluate the microstructural evolution, texture and crystal correlations of the Ti-6Al-4V alloy coated with SiC/Cr film by High Power Impulse Magnetron Sputtering (HiPIMS) before and after creep tests. The creep tests performed at temperatures of 500, 600 and 650 °C, in constant load mode stresses of 125, 250 and 319 MPa. The analyses of the samples were carried out by means of scanning electron microscopy (SEM) using the technique of backscattered electron diffraction (EBSD) and energy dispersion X-ray spectroscopy (EDS). The EBSD results on Ti-6Al-4V alloy were identified that there were microstructural changes and texture for a set of preferred orientations that with increased the creep test load stresses, the Ti-α and Ti-β phases texturization increases.

【 授权许可】

CC BY