Coarsening of Laves phase and creep behaviour of a Re-containing 10% Cr-3% Co-3% W steel

Fedoseeva, Alexandra; Nikitin, Ivan; Dudova, Nadezhda; Kaibyshev, Rustam

doi:10.1016/j.msea.2021.141137

Cited by 26 publications

(21 citation statements)

References 69 publications

(284 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, for the developing 11-12% Cr steels with excellent oxidation resistance due to high Cr content, the main task is to reach the creep strength level at least of the conventional 9% Cr P92 steel. The experimental 10Cr [8] and 10Cr-0.2Re steels [39][40][41] with 80 ppm B/20-30 ppm N, as compared with the 10% Cr NF12 steel (10Cr-2.5W-2Co) with conventional B and N contents, show advantages in the long-term creep region (Figure 15b). These steels exhibit higher creep strength at low stresses (<140 MPa), whereas, at high stresses, new steels are significantly less resistant to creep than the NF12 steel and closer to the creep level of the P92/P122 steels (Figure 15b).…”

Section: The 10% Cr and 11-12% Cr Steelsmentioning

confidence: 96%

“…The 10% Cr steels are represented by the experimental 10Cr [8,15] and 10Cr-0.2Re [39][40][41] steels designed on the base of TOS 110 steel. As known, TOS 110 steel was developed in Japan at Toshiba with the main composition of 10Cr-0.7Mo-1.8W-3Co-VNb-0.01B-0.02N for turbine rotor application at 630 • C [42][43][44].…”

Section: The 10% Cr Steelsmentioning

confidence: 99%

“…The 10Cr-0.2Re steel was designed on the base of the following approaches: (1) the most part of Mo is replaced by W for increasing the precipitation strengthening (2.86% W-0.13% Mo); (2) rhenium is added (0.2% Re) to improve creep strength as it was found that Re not only increases the solid solution strengthening but also has a retardation effect on the W diffusion [39][40][41]. TOS 203 steel with 0.2% Re [46] was used for comparison of creep strength of the 10Cr-0.2Re steel.…”

Section: The 10% Cr Steelsmentioning

confidence: 99%

“…Data are adapted from Refs. [2,5,6,8,11,[15][16][17][18][20][21][22][25][26][27][31][32][33][34][35][36][37][38][39][41][42][43][44][45][46][49][50][51][52][53][54][55][56][57][58]. * N-normalization, T-tempering.…”

Section: The 11-12% Cr Steelsmentioning

confidence: 99%

“…The data are from Refs. [5,6,8,11,16,18,20,22,25,27,32,39]. It is clearly seen that the time to rupture versus applied stress points for these steels are higher, mainly than those for the P92 and P122 steels, suggesting the higher creep resistance of new steels.…”

mentioning

confidence: 91%

See 4 more Smart Citations

9–12% Cr Heat-Resistant Martensitic Steels with Increased Boron and Decreased Nitrogen Contents

Dudova

2022

Metals

View full text Add to dashboard Cite

As a promising alloying approach, the modification of chemical composition by increasing the B content and decreasing the N content has been applied to improve the creep resistance of various 9–12% Cr heat-resistant martensitic steels. This paper presents an overview of the creep strength and related microstructural features of the 9% Cr and 10–12% Cr martensitic steels with high B and low N contents. The factors that determine the optimal B/N ratio in steels are considered. The creep properties are compared with those for similar steels with conventional B and N contents. The relationships between the stability of lath structure and precipitates of M23C6, Laves, and MX phases and the creep strength of steels are considered. Further perspectives of this modification of alloying by high boron and low nitrogen are outlined.

show abstract

Section: The 10% Cr and 11-12% Cr Steelsmentioning

confidence: 96%

Section: The 10% Cr Steelsmentioning

confidence: 99%

Section: The 10% Cr Steelsmentioning

confidence: 99%

Section: The 11-12% Cr Steelsmentioning

confidence: 99%

mentioning

confidence: 91%

See 3 more Smart Citations

9–12% Cr Heat-Resistant Martensitic Steels with Increased Boron and Decreased Nitrogen Contents

Dudova

2022

Metals

View full text Add to dashboard Cite

show abstract

Ferritic–Martensitic Steels in Power Industry: Microstructure, Degradation Mechanism, and Strengthening Methods

Jiang,

Huang,

Feng

et al. 2024

steel research int.

View full text Add to dashboard Cite

Ferritic–martensitic (F–M) steels are widely used for high‐temperature pressure vessels and reactor cladding structures in power plants. The high operating temperatures and pressures, as well as the radiation environment, significantly challenge the mechanical stability of these steels. Here, the degradation mechanisms in F–M steels during creep and thermal aging under these harsh environments are reviewed. The exceptional mechanical properties of F–M steels are mainly attributed to their well‐constructed microstructures and chemical compositions. Microstructural barriers such as dislocations, solid solution atoms, and precipitates play key roles in resisting degradation. During the long‐term service, the microstructures undergo gradual evolution, resulting in a deterioration of mechanical properties at the macrolevel. In addition to the degradation mechanisms, some recent advancements in strengthening methods, including microalloying strengthening, thermomechanical treatment (TMT), and oxide dispersion strengthening, are summarized, aimed at the development of next‐generation F–M steels. The strengthening of the F–M steels is mainly achieved by enhancing the thermal stability of their microstructures. Insight into both the deterioration mechanisms and strengthening methods of F–M steels may pave the way for new approaches in developing high‐performance steels for applications in next‐generation power plants operating at ultrahigh operating temperatures and pressures.

show abstract

Precipitate Characteristic of T91 Ferritic/Martensitic Steel During Short-Term Creep

Li,

Huang,

Liang

et al. 2023

Metall Mater Trans A

View full text Add to dashboard Cite

Coarsening of Laves phase and creep behaviour of a Re-containing 10% Cr-3% Co-3% W steel

Cited by 26 publications

References 69 publications

9–12% Cr Heat-Resistant Martensitic Steels with Increased Boron and Decreased Nitrogen Contents

9–12% Cr Heat-Resistant Martensitic Steels with Increased Boron and Decreased Nitrogen Contents

Ferritic–Martensitic Steels in Power Industry: Microstructure, Degradation Mechanism, and Strengthening Methods

Precipitate Characteristic of T91 Ferritic/Martensitic Steel During Short-Term Creep

Contact Info

Product

Resources

About