Academic Journal
Creep and Mechanical Behavior Study of Inconel 718 Superalloy
| العنوان: | Creep and Mechanical Behavior Study of Inconel 718 Superalloy |
|---|---|
| المؤلفون: | Tarcila Sugahara, Antônio Augusto Couto, Miguel Justino Ribeiro Barboza, Francisco Piorino Neto, Renata Jesuina Takahashi, Danieli Aparecida Pereira Reis |
| المصدر: | Materials Research, Vol 25 (2021) |
| بيانات النشر: | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol), 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials |
| مصطلحات موضوعية: | Creep, Inconel 718, Mechanical behavior, Materials characterization, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| الوصف: | 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 °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 (Qc = 512.97 kJ/mol), suggested that creep mechanism at 650 °C was the climb dislocation mechanism. The Inconel 718 presented ductile fracture at 650 and 700 °C and intergranular fracture to 675 °C. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1516-1439 1980-5373 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100218&tlng=en; https://doaj.org/toc/1516-1439 |
| DOI: | 10.1590/1980-5373-mr-2021-0280 |
| URL الوصول: | https://doaj.org/article/5a1994f9634e4078b5272a018baa0651 |
| رقم الانضمام: | edsdoj.5a1994f9634e4078b5272a018baa0651 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 15161439 19805373 |
|---|---|
| DOI: | 10.1590/1980-5373-mr-2021-0280 |