This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Creep Analysis of Inconel 718 Aged Superalloy at 675°C
Technical Paper
2012-36-0381
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The study of creep has a major importance when materials are submitted to high stress and homologous temperature. Superalloys are designed to operate under high stress, temperature and corrosion environment. Those properties of superalloys are due to high temperature stable matrix, solid solution elements and precipitated particles. This study aims to determine the creep resistance of Inconel 718 aged superalloy obtained through the tests according to ASTM E139-06, at stress range of 510 to 700 MPa and temperature of 675°C. The parameters as the primary creep time (tp), steady-state creep rate (εs), time to rupture (tr) and strain to rupture (εr) are important to evaluate the creep resistance. It used a scanning electron microscope (SEM) to obtain images of the fracture surface of specimens. The images of the fracture surface were investigated in order to relate the temperature of test with the fracture mechanism. The microstructure evolution was analyzed using optical microscope (OM) to determine grain size and precipitated particles dispersion.
Recommended Content
Authors
- Felipe R. Caliari - Instituto Tecnologico de Aeronautica
- Danieli A. P. Reis - Instituto Tecnologico de Aeronautica
- Carlos de Moura Neto - Instituto Tecnologico de Aeronautica
- Katia C. G. Candioto - Universidade de Sao Paulo-DEMAR
- Carlos A. Nunes - Universidade de Sao Paulo-DEMAR
- Antonio A. Couto - Instituto de Pesquisas Energeticas e Nucleares and Universid
Citation
Caliari, F., Reis, D., de Moura Neto, C., Candioto, K. et al., "Creep Analysis of Inconel 718 Aged Superalloy at 675°C," SAE Technical Paper 2012-36-0381, 2012, https://doi.org/10.4271/2012-36-0381.Also In
References
- Sims, T.S Stoloff, N. Hagel, W.C. Superalloys II High Temperature Materials for Aerospace and Industrial Power Willey New York 1987
- Evans, R.W. Wilshire, B. Creep of metals and alloys London The Institute of Metals 1985 314
- Annual Book of ASTM Standards “American Society of Testing and Materials” Phyladelphia, PA 1995 03 01 257 267
- Riedel, H. Fracture at high temperatures. Materials Research and Engineering Springer-Verlag Berlin 1987