Journal of Engineering Materials and Technology, ( ISI ), Volume (136), No (1), Year (2014-1) , Pages (1110061-1110067)

Title : ( Creep Characterization of Ni-Based Superalloy IN-792 Using the 4 and 6-h Projection Method )

Authors: Seyed Abdolkarim Sajjadi , mohammad berahmand , Abolfazl Rezaee Bazzaz ,

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This paper studies the accuracy of a technique which is capable of predicting and modeling a wide range of creep life in Ni-based superalloys. The h-projection method was applied to characterize the creep behavior of the Ni-based superalloy IN-792 at 800 C. Constant load creep tests have been carried out over a wide range of loads at the constant operating temperature. Creep curves were fitted using either 4-h or 6-h equation by the use of a nonlinear least-square technique. The results showed that both 4- and 6-h projection parameters revealed a good linearity as a function of stress. Comparison of experimental creep curves with those predicted using both of the utilized h-projection techniques showed that the techniques fit the experimental data at high strain values very well while the 6-h approach describes much better the creep curves at low strain region. [DOI: 10.1115/1.4026035]

Keywords

, mechanical behavior, high-temperature creep,
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@article{paperid:1037295,
author = {Sajjadi, Seyed Abdolkarim and Berahmand, Mohammad and Rezaee Bazzaz, Abolfazl},
title = {Creep Characterization of Ni-Based Superalloy IN-792 Using the 4 and 6-h Projection Method},
journal = {Journal of Engineering Materials and Technology},
year = {2014},
volume = {136},
number = {1},
month = {January},
issn = {0094-4289},
pages = {1110061--1110067},
numpages = {6},
keywords = {mechanical behavior; high-temperature creep; fracture},
}

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%0 Journal Article
%T Creep Characterization of Ni-Based Superalloy IN-792 Using the 4 and 6-h Projection Method
%A Sajjadi, Seyed Abdolkarim
%A Berahmand, Mohammad
%A Rezaee Bazzaz, Abolfazl
%J Journal of Engineering Materials and Technology
%@ 0094-4289
%D 2014

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