Alexandra Fedoseeva
Belgorod State University
Ultimate tensile strengthFerrite (iron)CreepDislocationComposite materialMartensiteMetallurgyMaterials scienceTemperingLaves phaseLathLong term ageingPhase (matter)CarbideTungstenNucleationOstwald ripeningPrecipitation (chemistry)MicrostructureStress (mechanics)Austenite
43Publications
10H-index
283Citations
Publications 43
Newest
#1Alexandra FedoseevaH-Index: 10
#2Ivan NikitinH-Index: 2
Last. Rustam KaibyshevH-Index: 58
view all 5 authors...
1 CitationsSource
#1Alexandra FedoseevaH-Index: 10
#2I. NikitinH-Index: 5
Last. Rustam KaibyshevH-Index: 58
view all 4 authors...
Abstract Re-containing 10Cr-3Co-3W martensitic steel with low nitrogen and high boron contents exhibited a rupture time of 10,987 h at 650°C/140 MPa. This superior creep resistance was caused by partially saved tempered martensite lath structure due to precipitation of M23C6 carbides and Laves phase chains on lath boundaries as well as their high resistance to coarsening. M23C6 carbides were characterized by decreased interfacial energy that resulted in the retention of the orientation relations...
5 CitationsSource
#1Alexandra FedoseevaH-Index: 10
#2Ivan NikitinH-Index: 2
Last. Rustam KaibyshevH-Index: 58
view all 5 authors...
Co-modified 12%Cr martensitic steels are perspective materials for steam blades for fossil power plants which are able to work at ultra-supercritical parameters of steam (T=620-650°C, P=25-30 MPa). The microstructure and mechanical properties of two Ta-containing and Ta-free Co-modified 12%Cr martensitic steels subjected to the normalizing at 1050-1070°C and tempering at different temperatures ranging from 750 to 800 °C were studied. After normalizing at 1050-1070°C, the average size of prior au...
Source
#1Ivan NikitinH-Index: 2
#2Alexandra FedoseevaH-Index: 10
Last. Rustam KaibyshevH-Index: 58
view all 4 authors...
The effect of heat treatment on the microstructure and mechanical properties of Febal-0.1 wt.%C-12Cr-3Co-2.5W-1Cu-VNbTaBN steel was investigated. After normalization in the range of 1050-1150°C, the martensitic structure was dominant; δ-ferrite content was about 10%. When the temperature of normalizing increased from 1050°C to 1150°C, the average size of prior austenite grains increased from 44 to 68 µm. After tempering at 750, 770 and 800°C, tempered martensitic lath structure with a high dislo...
Source
#1Alexandra Fedoseeva (Belgorod State University)H-Index: 10
Last. Rustam KaibyshevH-Index: 58
view all 4 authors...
Abstract—The mechanism of the nucleation of Z-phase (CrVN) particles in a martensitic 10Kh9K3V2MFBR steel (9 wt % Cr) during creep at a temperature of 650°C is studied. The nucleation mechanism of Z-phase particles at a creep temperature of 650°C is found to be restructuring of the crystal lattice of V(C,N) carbonitrides due to the diffusion of chromium atoms. The transformation of nanosized V(C,N) carbonitrides into Z-phase particles is shown to weakly contribute to the structural degradation i...
1 CitationsSource
#1Alexandra FedoseevaH-Index: 10
#2I. NikitinH-Index: 5
Last. Rustam KaibyshevH-Index: 58
view all 4 authors...
Abstract 9–12%Cr martensitic steels are perspective materials for critical components of new high-efficiency power plants working at ultra-supercritical parameters of steam. Addition of 0.2% rhenium in the experimental steel improved the short-term creep strength at 650 °C. Comparison of kinetics of tungsten depletion from the matrix in different high-Cr martensitic steels showed that rhenium in the experimental 10Cr-3Co-3W-0.2Re steel did not lead to retaining an increased amount of solute W in...
8 CitationsSource
#1Alexandra Fedoseeva (Belgorod State University)H-Index: 10
#2Ivan Nikitin (Belgorod State University)H-Index: 2
Last. Rustam Kaibyshev (Belgorod State University)H-Index: 58
view all 5 authors...
Source
Source
#1Alexandra FedoseevaH-Index: 10
#3Ivan NikitinH-Index: 2
Last. Rustam KaibyshevH-Index: 58
view all 4 authors...
1 CitationsSource
#1Alexandra FedoseevaH-Index: 10
#2I. NikitinH-Index: 5
Last. Rustam KaibyshevH-Index: 58
view all 4 authors...
Source