Results 131 to 140 of about 212 (166)

Effects of tantalum on austenitic transformation kinetics of RAFM steel

Journal of Iron and Steel Research International, 2017
The RAFM (reduced activation ferritic/martensitic) steels containing different tantalum contents (0 wt. %, 0.027 wt. %, 0.073 wt. %) were designed and cast. Differential scanning calorimetry and optical microscopy were employed to explore the influence of tantalum content on the austenitic transformation of RAFM steels.
Jian-guo Chen, Yong-chang Liu, Chen-xi Liu, Bi-yu Yan, Hui-jun Li   +4 more
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Solubility of uranium at very low concentration in RAFM steel

Journal of Nuclear Materials, 2002
Abstract In this work we present the results to develop standards of reduced activation ferritic–martensitic (RAFM) alloys for the quantitative determination of uranium in these materials. The results show that a very low efficiency can be obtained during alloying of uranium due to the segregation to the slags. The solubility of U can be increased by
A. Paúl, L.C. Alves, J.A. Odriozola, J.C. Soares   +3 more
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Effect of Nanostructured Surface on the Corrosion Behavior of RAFM Steels

Oxidation of Metals, 2019
This study investigated the effect of a preformed nanostructured surface on the corrosion behavior of 9Cr2WVTa reduced activation ferritic/martensitic (RAFM) steel and 9Cr+AlSi steel (9Cr2WVTa with the 0.12 wt.% Al and 0.68 wt.% Si addition) at 700 °C in air and at 550 °C in liquid lead–bismuth eutectic (LBE) alloys.
Yanhong Lu, Maolong Zhang, Weibao Tang, Yuanyuan Song, Lijian Rong   +4 more
openaire   +1 more source

Optimization on the microstructure and mechanical property of ODS-RAFM steel

Materials Letters
A strategy for overcoming strength-ductility tradeoff of RAFM steel is realized through the introduction of numerous nanoparticles homogeneously dispersed in ultrafine-coarsen (bimodal grained) grained ODS steel matrix. Optimized the interface of Y2O3 oxide by in-suit grown carbide coatings, significantly improving the dispersion state to achieve dense
Chao Hai, Tingjun Huang, Heng Chen, Tao Wang, Gaofan Zhu, Qunying Huang   +5 more
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Improvement of RAFM steels through thermo-mechanical treatments

2015
*contact: Jan Hoffmann E‐Mail: j.hoffmann@kit.edu Phone: +49 (0) 721 6082 3476 Improvement of RAFM steels through thermo‐mechanical Materials and Process Batch W Cr Ta Fe EUROFER97‐2 993402 1.06 8.9 0.18 0.04 0.15 0.1 bal. EUROFER97‐2 993391 1.08 8.83 0.2 0.02 0.12 0.1 bal.
Hoffmann, J., Rieth, M., Commin, L., Fernandez, P., Roldan, M.   +4 more
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Modeling the constitutive behavior of RAFM steels under irradiation conditions

Journal of Nuclear Materials, 2011
Abstract A coupled viscoplastic deformation damage model will be presented which is modified to take into account irradiation induced hardening and its recovery due to inelastic deformation and/or high temperature annealing. The model allows the prediction of the constitutive behavior of RAFM steels under arbitrary creep-fatigue and irradiation ...
Aktaa, J., Petersen, C.
openaire   +2 more sources

Oxidation behavior of 9Cr-RAFM steel at high temperature

Ironmaking & Steelmaking: Processes, Products and Applications
The effect of yttrium on the mechanism of oxidation film formation of the 9Cr reduced activation ferritic/martensitic (9Cr-RAFM) steel was investigated. Four alloys yttrium contents ranging from 0 to 0.065% were melted in a vacuum induction furnace and subjected to continuous isothermal oxidation experiments.
Guoxing Qiu, Jianing Li, Chong Bai, Yongkun Yang, Yaru Cui, Xiaoming Li   +5 more
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Determining irradiation damage and recovery by instrumented indentation in RAFM steel

Journal of Nuclear Materials, 2011
Abstract The mechanical behavior of specific reduced-activation ferritic-martensitic steels (RAFM), designed for fusion applications, is investigated in the present study. Eurofer97 and F82H-mod specimens have been neutron-irradiated in the High Flux Reactor at Petten (HFR) up to a dose of 15 dpa at 250–450 °C. An indentation method [1] , making use
Sacksteder, I., Schneider, H. C., Materna-Morris, E.   +2 more
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Comparative study on hot deformation behaviour of P91, RAFM-CLAM and Low C RAFM-CLAM steels by processing maps

Fusion Engineering and Design, 2019
Abstract The comparative study of high temperature deformation behaviour of P91, RAFM-CLAM and Low C RAFM-CLAM steels was done from compression deformation data in the temperature range of 850–1100 °C and the strain rate range of 10−3–10 s-1. The processing maps in terms of strain rate sensitivity (m), % efficiency of power dissipation (ƞ) and the ...
Naimish S. Shah, Jayanta K. Chakravartty, Apu Sarkar   +2 more
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Effect of tungsten on tensile properties and flow behaviour of RAFM steel

Journal of Nuclear Materials, 2013
Abstract Effect of tungsten in the range of 1–2 wt.% on tensile properties and flow behaviour of 9Cr–W–Ta–V Reduced Activation Ferritic–Martensitic (RAFM) steel has been investigated. The tungsten in the investigated range was found to have only minor effect on the tensile properties of the steel over the temperature range of 300–873 K and at a ...
J. Vanaja, K. Laha, M. Nandagopal, Shiju Sam, M.D. Mathew, T. Jayakumar, E. Rajendra Kumar   +6 more
openaire   +1 more source