Creep deformation and rupture behaviour of 9Cr–1W–0.2V–0.06Ta Reduced Activation Ferritic–Martensitic steel

Vanaja, J.; Laha, K.; Mythili, R.; Chandravathi, K.S.; Saroja, S.; Mathew, M.D.

doi:10.1016/j.msea.2011.10.112

Cited by 61 publications

(26 citation statements)

References 21 publications

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“…These hardness values obtained for low and high cooling rates agree with the microstructures described and are typical of self-quenching steels with good hardenability. 6) Previous to tensile testing, the samples were austenitized at 1 050°C/60 min and subsequent air-cooled at about 5°C/s and tempered and annealed for 3 h at 760°C and air-cooled at about 5°C/s. The initial microstructure is giving in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…[2][3][4] Such demand can be achieved by raising the operating temperatures and pressures of the plant, but to withstand more severe service conditions, new materials with superior long term creep and thermal fatigue properties are needed for boiler and turbine components. 5) Several ferritic steels containing 9-12%Cr, including the P92 grade, have been developed and widely used for operating temperatures up to 620°C because their excellent combination of mechanical, thermal and oxidation-resistant properties as well as void swelling resistance, [6][7][8] acceptable room temperature properties 9,10) and also good toughness, weldability and hot workability. 11,12) Microstructural investigations support that the high creep strength of P92 grade has a complex structure with a large amount of effective barriers to dislocation movement: a lath structure inside the prior austenite grains, fine dispersion of small second phase particles, high dislocation density, and the presence of elements in solid solution.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Temperature on Mechanical Properties of 9%Cr Ferritic Steel

Peñalba

Gómez-Mitxelena

Jiménez³

et al. 2016

ISIJ International

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on Mechanical Properties of 9%Cr Ferritic Steel

Peñalba

Gómez-Mitxelena

Jiménez³

et al. 2016

ISIJ International

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“…The absence of fine particles reduces the creep strength. In addition, the new coarser phases can serve as sites for crack nucleation that lowers the creep strength further [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Basic modelling of tertiary creep of copper

Sui

Sandström

2018

J Mater Sci

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Mechanisms that are associated with acceleration of the creep rate in the tertiary stage such as microstructure degradation, cavitation, necking instability and recovery have been known for a long time. Numerous empirical models for tertiary creep exist in the literature, not least to describe the development of creep damage, which is vital for understanding creep rupture. Unfortunately, these models almost invariably involve parameters that are not accurately known and have to be fitted to experimental data. Basic models that take all the relevant mechanisms into account which makes them predictive have been missing. Only recently, quantitative basic models have been developed for the recovery of the dislocation structure during tertiary creep and for the formation and growth of creep cavities. These models are employed in the present paper to compute the creep strain versus time curves for copper including tertiary creep without the use of any adjustable parameters. A satisfactory representation of observed tertiary creep has been achieved. In addition, the role of necking is analysed with both uniaxial and multiaxial methods.

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“…CLAM steel is considered as the primary Chinese test blanket module of International Thermonuclear Experimental Reactor (ITER) and in the designs of FDS series PbLi blankets for the future fusion reactors [1,2] . The mechanical properties of CLAM steel were paid much attention by researchers [3] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Silicon on microstructures of iron after high-temperature deuterium implantation

Jiang¹

2017

Proceedings of the 2017 6th International Conference on Measurement, Instrumentation and Automation (ICMIA 2017)

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Abstract:To study the effect of silicon on microstructures in CLAM (China Low Activation Martensitic) steel after irradiation, the microstructures of Fe and FeSi model alloys were investigated after implanted deuterium ions at 773K. TEM (Transmission Electron Microscope) observation and EDX (Energy Dispersive X-ray Spectrum) analysis have been carried out. The results showed that tiny voids were observed in Fe after implantation, while no void observed in FeSi model alloys. Instead, there were some carbides which indicated silicon played an important role in the improved irradiation resistance. Fast diffusing mechanism was adopted to analyze the effect of silicon during irradiation.

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Creep deformation and rupture behaviour of 9Cr–1W–0.2V–0.06Ta Reduced Activation Ferritic–Martensitic steel

Cited by 61 publications

References 21 publications

Effect of Temperature on Mechanical Properties of 9%Cr Ferritic Steel

Effect of Temperature on Mechanical Properties of 9%Cr Ferritic Steel

Basic modelling of tertiary creep of copper

Effect of Silicon on microstructures of iron after high-temperature deuterium implantation

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