Paper Title:
Creep Curve Modeling to Generate the Isochronous Stress-Strain Curve of Type 316LN Stainless Steel
  Abstract

An isochronous stress-strain curve (ISSC) needs to be generated for a creep design application for high-temperature materials. To generate the ISSC for type 316LN stainless steel (SS), a series of creep data, which was obtained from creep tests with different stress levels at 600oC, was used. Creep curves were modeled by means of a nonlinear least square fitting (NLSF) of the Garofalo model. In the fitting of the creep curve, a secondary creep region was separated into first and second phases, and its fitting range was suitable to use for the first phase. The Garofalo model revealed a good agreement with the experimental creep data, and its parameters, P1, P2 and P3 revealed a good linear relationship as a function of a stress. The ISSCs for type 316LN SS at 600oC were successfully generated up to 300,000 hours.

  Info
Periodical
Key Engineering Materials (Volumes 385-387)
Edited by
H.S. Lee, I.S. Yoon and M.H. Aliabadi
Pages
705-708
DOI
10.4028/www.scientific.net/KEM.385-387.705
Citation
S. N. Yin, W. G. Kim, I. H. Jung, Y. W. Kim, S. J. Kim, "Creep Curve Modeling to Generate the Isochronous Stress-Strain Curve of Type 316LN Stainless Steel", Key Engineering Materials, Vols. 385-387, pp. 705-708, 2008
Online since
July 2008
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$32.00
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