Effect of prior creep at 1365 K on the room temperature tensile properties of several oxide dispersion strengthened alloys

1977 ◽  
Vol 8 (12) ◽  
pp. 1863-1870 ◽  
Author(s):  
J. Daniel Whittenberger
Keyword(s):  
Tensile Properties ◽  
Room Temperature ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion

Development of Adapted Material Testing for Cold Pilgering Process of ODS Tubes

2013 ◽  
Vol 554-557 ◽  
pp. 2243-2251 ◽  
Author(s):  
Katia Mocellin ◽  
Esteban Vanegas ◽  
Yann de Carlan ◽  
Roland E. Logé
Keyword(s):  
Room Temperature ◽  
Kinematic Hardening ◽  
Oxide Dispersion Strengthened ◽  
Stress And Strain ◽  
Oxide Dispersion ◽  
Martensitic Steels ◽  
Uniform Loading ◽  
Cold Pilgering ◽  
Irradiation Level ◽  
Numerical Approaches

Development of fast-neutron sodium-cooled Generation IV reactors is resulting in extremely severe environment conditions for cladding tubes [1]. Both temperature and irradiation level will increase compared to the nowadays conditions. Due to their characteristics in irradiated environment, the oxide dispersion strengthened (ODS) ferritic and martensitic steels are natural candidate cladding materials[2]. However, they exhibit low deformation capabilities at room temperature, leading to problematic issues for forming such as pilgering. In order to improve the fabrication route for tubes, both metallurgical and numerical approaches can be conducted [3,4,5]. To reach predictive description of damage location and evolution, an adapated Latham and Cockoft model has been developed. This model is, of course, highly depending on the stress and strain prediction of the numerical model which itself is linked to the behavior law. In this work, we will describe an adapted material test developed in order to reproduce the cyclic, non uniform loading of the material during pilgering. An advanced cyclic beahvior law is introduced in the software. The model of Chaboche using 2 isotropic and 2 kinematic variables is chosen[6]. An inverse analysis procedure is used to identify both isotropic and kinematic hardening parameters. The results obtained using the identified behavior law are compared to both experimental observation and to other models including monotonic or cyclic laws identified on traditional test.

Tensile properties of Co-added FeCrAl oxide dispersion strengthened alloy

2021 ◽  
Vol 852 ◽  
pp. 156956
Author(s):  
Shenghua Zhang ◽  
Shigeharu Ukai ◽  
S.M.S. Aghamiri ◽  
Naoko Oono ◽  
Shigenari Hayashi
Keyword(s):  
Tensile Properties ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Oxide Dispersion Strengthened Alloy

Effects of neutron irradiation on tensile properties of oxide dispersion strengthened (ODS) steel claddings

2011 ◽  
Vol 419 (1-3) ◽  
pp. 305-309 ◽  
Author(s):  
Y. Yano ◽  
R. Ogawa ◽  
S. Yamashita ◽  
S. Ohtsuka ◽  
T. Kaito ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Neutron Irradiation ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Ods Steel

Mechanical Properties of Discontinuous SiC Reinforced Aluminum Composites at Elevated Temperatures

1988 ◽  
Vol 110 (2) ◽  
pp. 77-82 ◽  
Author(s):  
T. G. Nieh ◽  
K. Xia ◽  
T. G. Langdon
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Aluminum Matrix ◽  
Oxide Dispersion Strengthened ◽  
Dislocation Motion ◽  
Particulate Composites ◽  
Oxide Dispersion ◽  
Aluminum Composites ◽  
High Temperature Mechanical Properties

High temperature mechanical properties of discontinuous, whisker and particulate, SiC reinforced aluminum composites, including 2124 and 6061 alloy matrices, are reviewed. It is shown that the behavior of these composites is similar to conventional oxide dispersion strengthened alloys. Namely, they exhibit a low strain rate senstivity and a high apparent activation energy for creep deformation. Despite the fact that the addition of SiC significantly improves the mechanical properties of aluminum at room temperature, the mechanical strength of the composite at elevated temperatures is dominated by the strength of the aluminum matrix This is because the SiC dispersoids are, in general, too coarse and they are not effective barriers for dislocation motion. It is also demonstrated that SiC particulate composites are less creep resistant than SiC whisker composites.

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