Influence of cerium on the creep properties of the austenitic stainless steel 253MA

The physical metallurgical tests were performed on the test samples made of HR3C steel, taken from a section of a pipeline in the as-received condition and after approximately 26,000 h of service at 550 °C. In the as-received condition, the test material had austenitic microstructure with numerous large primary Z-phase precipitates inside the grains. The service of the test steel mainly contributed to the precipitation processes inside the grains and at the grain boundaries. After service, the following precipitates were identified in the microstructure of the test steel: Z-phase (NbCrN) and M23C6 carbides. The Z-phase precipitates were observed inside the grains, whereas M23C6 carbides - at the boundaries where they formed the so-called continuous grid. The service of the test steel contributed to the growth of the strength properties, determined both at room and elevated temperature (550, 600 °C), compared to the as-received condition. Moreover, the creep properties of HR3C steel after service were higher than those of the material in the as-received condition. The increase in the strength properties and creep resistance was connected with the growth of strengthening of the test steel by the precipitation of Z-phase and M23C6 carbides.

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Improvement of Creep Properties in a Helium Injected Austenitic Stainless Steel

Effects of Radiation on Structural Materials ◽

10.1520/stp33689s ◽

2009 ◽

pp. 218-218-15

Author(s):

S Kawasaki ◽

T Furuta ◽

R Nagasaki ◽

K Uematsu

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Creep Properties

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Effect of prior cold work on creep properties of a titanium modified austenitic stainless steel

Journal of Nuclear Materials ◽

10.1016/j.jnucmat.2013.03.014 ◽

2013 ◽

Vol 438 (1-3) ◽

pp. 51-57 ◽

Cited By ~ 8

Author(s):

V.D. Vijayanand ◽

P. Parameswaran ◽

M. Nandagopal ◽

S. Panneer Selvi ◽

K. Laha ◽

...

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Cold Work ◽

Creep Properties ◽

Prior Cold Work

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Thermal creep properties of Ti-stabilized DIN 1.4970 (15-15Ti) austenitic stainless steel pressurized cladding tubes

Journal of Nuclear Materials ◽

10.1016/j.jnucmat.2017.06.013 ◽

2017 ◽

Vol 493 ◽

pp. 154-167 ◽

Cited By ~ 7

Author(s):

Niels Cautaerts ◽

Rémi Delville ◽

Wolfgang Dietz ◽

Marc Verwerft

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Thermal Creep ◽

Creep Properties

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Some aspects of the defect structure in an austenitic stainless steel

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100108714 ◽

1978 ◽

Vol 36 (1) ◽

pp. 314-315

Author(s):

R. Gonzalez ◽

L. Bru

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Cellular Structures ◽

Total Strain Amplitude ◽

Total Deformation ◽

Density Of Dislocations ◽

Planar Arrays ◽

Stacking Fault Tetrahedra ◽

Distribution Of Dislocations ◽

Very High

The analysis of stacking fault tetrahedra (SFT) in fatigued metals (1,2) is somewhat complicated, due partly to their relatively low density, but principally to the presence of a very high density of dislocations which hides them. In order to overcome this second difficulty, we have used in this work an austenitic stainless steel that deforms in a planar mode and, as expected, examination of the substructure revealed planar arrays of dislocation dipoles rather than the cellular structures which appear both in single and polycrystals of cyclically deformed copper and silver. This more uniform distribution of dislocations allows a better identification of the SFT.The samples were fatigue deformed at the constant total strain amplitude Δε = 0.025 for 5 cycles at three temperatures: 85, 293 and 773 K. One of the samples was tensile strained with a total deformation of 3.5%.

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