2020
DOI: 10.1016/j.mtla.2020.100788
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Creep deformation behavior of nano oxide dispersion strengthened Fe–18Cr ferritic steel

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Cited by 6 publications
(3 citation statements)
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“…This also leads to the high stress exponent of ODS alloys. For example, MA957 has approximately 20 [57], 18Cr-ODS has reached 26 [70], and some studies have even obtained a stress index of 125 in 14Cr-ODS [56]. This is very different from traditional metal materials.…”
Section: Thermal Creep Propertiesmentioning
confidence: 96%
“…This also leads to the high stress exponent of ODS alloys. For example, MA957 has approximately 20 [57], 18Cr-ODS has reached 26 [70], and some studies have even obtained a stress index of 125 in 14Cr-ODS [56]. This is very different from traditional metal materials.…”
Section: Thermal Creep Propertiesmentioning
confidence: 96%
“…where M Taylor factor = 3.06, [10] temperature-dependent shear modulus G (GPa) = 89.5[1 À 0.84((T-300)/ T M )]), [43] b Burgers vector = 0.25, m Poisson's ratio 0.29, [53] r s [54] (= 0.816 r)-mean radius of intersection of a random plane with a spherical particle radius of r [39] (= 2.05 nm), k [54] ¼ ffiffiffiffi 2p 3f q r -inter-particle spacing from center to center = 36 nm. Using the above values, the Orowan dispersion strength ðr Or Þ at room temperature (300 K) is obtained as 615 MPa.…”
Section: Strengthening Mechanisms In Regime Imentioning
confidence: 99%
“…Moreover, transmission electron microscopic analysis of n-ODS steel deformed samples did not reveal Orowan bowing when the interaction between dislocations and nanoprecipitates was studied. [37][38][39][40] It was found that in n-ODS alloys, the model proposed by Ro¨sler and Arzt [41] based on the dislocation detachment concept was appropriate to explain the interaction between dislocations and nanoparticles at high temperatures. Dade et al [18] have not considered the grain boundary and dislocation strengthening mechanisms in modeling the yield strength above the transition temperature by assuming their contribution was insignificant at high temperatures.…”
Section: Introductionmentioning
confidence: 99%