@Article{SugaharaCoBaPiTaRe:2021:CrMeBe,
author = "Sugahara, Tarcila and Couto, Antonio Augusto and Barboza, Miguel
Justino Ribeiro and Piorino Neto, Francisco and Takahashi, Renata
Jesuina and Reis, Danieli Aparecida Pereira",
affiliation = "{Universidade Federal de S{\~a}o Paulo (UNIFESP)} and
{Universidade Presbiteriana Mackenzie} and {Universidade de
S{\~a}o Paulo (USP)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Universidade Federal de S{\~a}o Paulo
(UNIFESP)} and {Universidade Federal de S{\~a}o Paulo
(UNIFESP)}",
title = "Creep and Mechanical Behavior Study of Inconel 718 Superalloy",
journal = "Materials Research: Ibero-American Journal of Materials",
year = "2021",
volume = "25",
number = "1",
pages = "e20210280",
keywords = "Creep, Inconel 718, Mechanical behavior, Materials
characterization.",
abstract = "Over the years, the demand for high engine efficiency has resulted
in the development of new generation superalloys with improved
elevated temperature properties, especially creep resistance. This
study aimed to evaluate creep and mechanical behavior of Inconel
718 superalloy. Creep tests were performed at temperature range of
650 to 700 degrees C and stress range of 625 to 814 MPa. Hot
tensile and oxidation tests were performed and the
characterization techniques used in this study were scanning
electron microscopy (SEM) for microstructural and fracture surface
analysis, transmission electron microscopy (TEM) for precipitates
analysis; grazing X-ray diffraction for analysis of oxide
formation and Vickers microhardness. The analyze of stress
exponent value (n = 36.48) and activation energy (Q(c) = 512.97
kJ/mol), suggested that creep mechanism at 650 degrees C was the
climb dislocation mechanism. The Inconel 718 presented ductile
fracture at 650 and 700 degrees C and intergranular fracture to
675 degrees C.",
doi = "10.1590/1980-5373-MR-2021-0280",
url = "http://dx.doi.org/10.1590/1980-5373-MR-2021-0280",
issn = "1516-1439 and 1980-5373",
language = "en",
targetfile = "sugahara_2021_creep.pdf",
urlaccessdate = "16 jun. 2024"
}