Influence of consolidation methods on the recrystallization kinetics of a Fe–14Cr based ODS steel

Dadé, M.; Malaplate, J.; Garnier, Josselin; Geuser, F. de; Lochet, N.; Deschamps, A.

doi:10.1016/j.jnucmat.2016.01.019

Cited by 43 publications

(15 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results indicate that nanoparticles with size less than 10 nm are insensitive to the increase of temperature and strain rate. These nanoparticles play an effective role in pinning the dislocation motion and grain boundary migration, due to the excellent stability [ 10 , 11 ]. The deformation temperature is not high enough to promote the growth of such nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

“…These nanoparticles are uniformly distributed in the matrix, acting as the pinning points for dislocation movement and grain boundary motion [ 7 ]. The stability of nanoparticles has been investigated by many researchers [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. The stable nanoparticles and the efficient pinning effect of them lead to the excellent high temperature and superior irradiation resistance of ODS steel [ 5 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

Zhao

et al. 2018

Materials

View full text Add to dashboard Cite

Hot deformation tests of 14Cr oxide dispersion strengthened (ODS) steel fabricated by mechanical alloying and hot isostatic pressing (HIP) were performed on a Gleeble-1500D simulator at temperatures ranging from 1050 to 1200 °C with the strain rate range of 0.001−1 s−1. The relationship between the rheological stress and the deformation condition was studied, and a processing map at the true strain of 0.5 was proposed. Microstructure evolution during the deformation process and the effects of deformation conditions on microstructures were also investigated, as well as the stability of nanoparticles. Results show that the 14Cr ODS steel possesses positive strain rate sensitivity. The flow stress increases with the decrease of deformation temperature and the increase of strain rate. The recrystallization process is promoted by the increase of deformation temperature and the reduction of strain rate. Nanoparticles possess excellent stability during the deformation process and are coherent with the matrix.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

Zhao

et al. 2018

Materials

View full text Add to dashboard Cite

show abstract

“…Currently developed extruded ferritic 14Cr ODS steels present a bimodal matrix microstructure, with a high proportion of submicron grains (e.g., [Dadé et al, 2016]). This microstructure results from partial abnormal grain growth during the heating stage applied to mechanically-alloyed powders (e.g.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic intergranular damage development and fracture in a 14Cr ferritic ODS steel under high-temperature tension and creep

Salmon-Legagneur

Vincent

Garnier

et al. 2018

Materials Science and Engineering: A

Self Cite

View full text Add to dashboard Cite

This work addresses damage mechanisms at high temperature of a hot extruded 14Cr oxide dispersion strengthened steel rod, in particular, anisotropy induced by its strong morphological and crystallographic texture. Under uniaxial tension, intergranular damage and unstable fracture increased with test temperature; they appeared much easier along the rod axis than perpendicular to it. Creep fracture of smooth specimens involved crack initiation from the side surfaces and intergranular crack propagation, accompanied by intergranular damage.In order to get rid of fracture surface oxidation by the air environment, a methodology promoting crack nucleation from inside the specimen was built. From tensile and creep tests on notched specimens the fracture initiation location and fracture stability were first mapped as a function of test temperature, maximal stress triaxiality and loading direction. Then, for the first time to the authors' knowledge, interrupted tests on notched tensile and creep specimens, followed by low-temperature fracture allowed revealing fracture surfaces formed at high temperature, but unconnected to the external environment. Intergranular fracture and grain boundary grooving were evidenced there, together with strong chemical reactivity at the surface of internal cavities during damage development at high temperature.

show abstract

“…1. Such a behavior is known to be due to the high number density of oxide particles in the grains and on grain boundaries, disturbing grain growth [8]. Through such, it is possible to infer that both materials have evenly dispersed high density oxides.…”

Section: Experimental Methodsmentioning

confidence: 99%

Effect of Heat Treatment on the Microstructure and Tensile Deformation Behavior of Oxide Dispersion Strengthened Alloys Manufactured by Complex Milling Process

Kim¹,

Kim²,

Gwon³

et al. 2017

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

This study attempted to manufacture an ODS alloy by combining multiple milling processes in mechanical alloying stage to achieve high strength and fracture elongation. The complex milling process of this study conducted planetary ball milling, cryogenic ball milling and drum ball milling in sequential order, and then the microstructure and tensile deformation behavior were investigated after additional heat treatment. The oxide particles distributed within the microstructure were fine oxide particles of 5~20 nm and coarse oxide particles of 100~200 nm, and the oxide particles were confirmed to be composed of Cr, Ti, Y and O. Results of tensile tests at room temperature measured yield strength, tensile strength and elongation as 1320 MPa, 2245 MPa and 4.2%, respectively, before heat treatment, and 1161 MPa, 2020 MPa and 5.5% after heat treatment. This results indicate that the ODS alloy of this study gained very high strengths compared to other known ODS alloys, allowing greater plastic zones.

show abstract

Influence of consolidation methods on the recrystallization kinetics of a Fe–14Cr based ODS steel

Cited by 43 publications

References 30 publications

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

Anisotropic intergranular damage development and fracture in a 14Cr ferritic ODS steel under high-temperature tension and creep

Effect of Heat Treatment on the Microstructure and Tensile Deformation Behavior of Oxide Dispersion Strengthened Alloys Manufactured by Complex Milling Process

Contact Info

Product

Resources

About