| Issue |
MATEC Web of Conferences
Volume 14, 2014
EUROSUPERALLOYS 2014 – 2nd European Symposium on Superalloys and their Applications
|
|
|---|---|---|
| Article Number | 20002 | |
| Number of page(s) | 4 | |
| Section | Posters: Mechanical Behavior II: Single-Crystalline Alloys | |
| DOI | https://doi.org/10.1051/matecconf/20141420002 | |
| Published online | 29 August 2014 | |
Creep deformation behaviour of Rhenium free Ni-based single crystal superalloys LSC-15
IHI Corporation, Research Laboratory, 1 Shin-nakahara-cho, Isogo-ku, Yokohama, Japan
a Corresponding author: nobuyasu_tsuno@ihi.co.jp
In this paper, creep deformation behavior of Ni-based single crystal superalloys LSC-15 were studied. LSC-15 does not include Rhenium and has been developed by IHI Corporation Japan. Creep tests were performed at 1000 and 1050 ∘C under several stress levels. The creep deformation behaviour was different between test temperatures at 1000 ∘C and 1050 ∘C. Moreover, the relationship between the minimum creep rate and stress was different at the various temperatures. The stress exponent values at 1000 ∘C and 1050 ∘C, were n = 6 and 12 respectively. This difference was due to differences in the formation of dislocation network. At 1000 ∘C, when the minimum creep rate, the dislocation network formed completely independent of stress level. On the other hand, at 1050 ∘C, the dislocation network had not developed fully at the minimum creep rate and the formation of dislocation network depended on the stress level. Therefore, stress dependency at 1050 ∘C is higher than that at 1000 ∘C.
© Owned by the authors, published by EDP Sciences, 2014
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