Long-term high-velocity oxidation and hot corrosion testing of several NiCrAl and FeCrAl base oxide dispersion strengthened alloys

1982 ◽  
Vol 17 (3-4) ◽  
pp. 205-221 ◽  
Author(s):  
Carl E. Lowell ◽  
Daniel L. Deadmore ◽  
J. Daniel Whittenberger

2018 ◽  
Vol 25 (7) ◽  
pp. 776-784
Author(s):  
Shuai Xu ◽  
Zhang-jian Zhou ◽  
Shao-fu Li ◽  
Hao-dong Jia


2016 ◽  
Vol 90 ◽  
pp. 318-329 ◽  
Author(s):  
S.F. Li ◽  
Z.J. Zhou ◽  
P.H. Wang ◽  
H.Y. Sun ◽  
M. Wang ◽  
...  


1981 ◽  
Vol 15 (3-4) ◽  
pp. 251-276 ◽  
Author(s):  
T. K. Glasgow ◽  
G. J. Santoro


2008 ◽  
Vol 1125 ◽  
Author(s):  
A-A. F. Tavassoli ◽  
B. Fournier ◽  
M. Sauzay

ABSTRACTGeneration IV fission and future fusion reactors envisage development of more efficient high temperature concepts where materials performances under creep-fatigue hold the key to success. This paper presents extended experimental results obtained from creep, fatigue and creep-fatigue tests on the main structural materials retained for these concepts, namely: stainless steel type 316L(N), the conventional Modified 9Cr-1Mo martensitic steel and its low activation derivatives such as Eurofer steel, and their more advanced grades strengthened by oxide dispersion. It shows that the existing recommendations made in design codes adequately cover individual damage due to creep or fatigue but often fall short under combined creep-fatigue interaction. This is partly due to the difficulties of reproducing service conditions in laboratory. In this paper, results from tests performed on components removed from reactor, after long service, are used to refine code recommendations.Using the above combined assessment, it is concluded that there is good confidence in predicting creep-fatigue damage for austenitic stainless steels. For the martensitic steels the effects of cyclic softening and microstructure coarsening throughout the fatigue life need more consideration in creep-fatigue recommendation. In the long-term development of ferritic/martensitic oxide dispersion strengthened grades with stable microstructure and no cyclic softening, appears promising provided problems associated with their fabrication and embrittlement are resolved.



2020 ◽  
Vol 174 ◽  
pp. 108833
Author(s):  
Young-Kyun Kim ◽  
Jeoung Han Kim ◽  
Yoon-Jun Kim ◽  
David N. Seidman ◽  
Kee-Ahn Lee


2014 ◽  
Vol 448 (1-3) ◽  
pp. 33-42 ◽  
Author(s):  
K.D. Zilnyk ◽  
H.R.Z. Sandim ◽  
R.E. Bolmaro ◽  
R. Lindau ◽  
A. Möslang ◽  
...  


Author(s):  
Jordi Marti ◽  
Timothy E. Howson ◽  
David Kratz ◽  
John K. Tien

The previous paper briefly described the fine microstructure of a mechanically alloyed oxide dispersion strengthened nickel-base solid solution. This note examines the fine microstructure of another mechanically alloyed system. This alloy differs from the one described previously in that it is more generously endowed with coherent precipitate γ forming elements A1 and Ti and it contains a higher volume fraction of the finely dispersed Y2O3 oxide. An interesting question to answer in the comparative study of the creep and stress rupture of these two ODS systems is the role of the precipitate γ' in the mechanisms of creep and stress rupture in alloys already containing oxide dispersoids.The nominal chemical composition of this alloy is Ni - 20%Cr - 2.5%Ti - 1.5% A1 - 1.3%Y203 by weight. The system receives a three stage heat treatment-- the first designed to produce a coarse grain structure similar to the solid solution alloy but with a smaller grain aspect ratio of about ten.





2003 ◽  
Vol 94 (5) ◽  
pp. 587-592 ◽  
Author(s):  
Uta Grundmann ◽  
Martin Heilmaier ◽  
Ulrich Martin ◽  
Heinrich Oettel ◽  
Ludwig Schultz


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