Ferritic/martensitic steels: promises and problems

Klueh, R.L.; Ehrlich, K.; Abe, Fujio

doi:10.1016/s0022-3115(09)80018-4

Cited by 57 publications

(51 citation statements)

References 26 publications

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“…The maximum swelling rate ($0.1%/dpa) is always lower than that for austenitic steels (>1%/dpa) and the swelling rate and peak swelling temperatures ($420°C) are both relatively insensitive to chromium content below $10% concentration. The chromium in solid solution is not primarily responsible for the swelling resistance of F/M steels: we now know that resistance is an intrinsic property of metals with a body-centered cubic (bcc) structure [4]. For more details on the current state-of-the-art regarding He and H effects on fusion materials, we refer the reader to the overview by Zinkle et al [1].…”

mentioning

confidence: 99%

A review of helium–hydrogen synergistic effects in radiation damage observed in fusion energy steels and an interaction model to guide future understanding

Marian

Hoang

Fluss

et al. 2015

Journal of Nuclear Materials

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mentioning

confidence: 99%

A review of helium–hydrogen synergistic effects in radiation damage observed in fusion energy steels and an interaction model to guide future understanding

Marian

Hoang

Fluss

et al. 2015

Journal of Nuclear Materials

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“…In the designs of advanced power plant components for future fission and fusion power plants, which will operate at temperatures up to 650 • C, the primary emphasis was placed on the development of new steel grades with superior long-term creep and thermal fatigue properties [2,3]. Several promising ferritic steels have been developed by the addition of very expensive alloying elements such as W and Co [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ausforming Temperature on the Microstructure of G91 Steel

Vivas

Capdevila

Jiménez

et al. 2017

Metals

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Abstract:The development of thermomechanical treatments (TMT) has a high potential for improving creep-strength in 9Cr-1Mo ferritic/martensitic steel (ASTM T/P91) to operate at temperatures beyond 600 • C. To maximize the number of nanoscale MX precipitates, an ausforming procedure has been used to increase the number of nucleation sites for precipitation inside the martensite lath. Relative to standard heat treatments (consisting of austenitization at about 1040 • C followed by tempering at about 730 • C) this processing concept has enabled achieving a microstructure containing approximately three orders of magnitude higher number density of MX precipitates having a size around four times smaller in ASTM T/P91 steel. On the other hand; this TMT has little effect on the size and number density of M 23 C 6 particles. The optimized microstructure produced by this TMT route proposed is expected to improve the creep strength of this steel.

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“…www.mdpi.com/journal/metals to neutron radiation damage [8] and reduce irradiation embrittlement [9], swelling, and damage accumulation [10]. ODS steels are commonly prepared by high-energy mechanical alloying (MA) of a mixture of steel powder and Y 2 O 3 particles followed by a consolidation stage consisting of hot isostatic pressing (HIP) or hot extrusion (HE) [11,12].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of a Nano-ODS Steel Prepared by Low-Energy Mechanical Alloying

Sanctis

Fava

Lovicu

et al. 2017

Metals

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An oxide dispersion strengthened (ODS) ferritic steel with nanometric grain size has been produced by low-energy mechanical alloying (MA) of steel powder (Fe-14Cr-1W-0.4Ti) mixed with Y 2 O 3 particles (0.3 wt %) and successive hot extrusion (HE). The material exhibits superior mechanical properties with respect to the unreinforced steel up to 400 • C; then such differences tend to progressively decrease and at 700 • C yield stress (YS) and ultimate tensile strength (UTS) values are very close. The microstructure and mechanical behaviour have been compared with those of ODS steels prepared by the most common process, high-energy MA, consolidation through hot isostatic pressing (HIP) or hot extrusion (HE), annealing around 1100 • C for 1-2 h. The main strengthening mechanisms have been examined and discussed to explain the different behaviour. In addition, heat treatments in the range 1050-1150 • C were carried out and a microstructural evolution with a relevant hardness decrease has been observed. TEM observations evidenced defect recovery and partial grain coarsening owing to the not perfectly homogeneous distribution of oxide particles.

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Ferritic/martensitic steels: promises and problems

Cited by 57 publications

References 26 publications

A review of helium–hydrogen synergistic effects in radiation damage observed in fusion energy steels and an interaction model to guide future understanding

A review of helium–hydrogen synergistic effects in radiation damage observed in fusion energy steels and an interaction model to guide future understanding

Effect of Ausforming Temperature on the Microstructure of G91 Steel

Mechanical Characterization of a Nano-ODS Steel Prepared by Low-Energy Mechanical Alloying

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