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CERN Document Server 2,016 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 0.56 secondes. 
1.
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Flow and fracture of austenitic stainless steels at cryogenic temperatures / Fernández-Pisón, P (CERN ; Carlos III U., Madrid) ; Rodríguez-Martínez, J A (Carlos III U., Madrid) ; García-Tabarés, E (CERN ; Carlos III U., Madrid) ; Avilés-Santillana, I (CERN) ; Sgobba, S (CERN)
In this paper, we have characterized the microstructural evolution and the plastic flow and fracture behaviours of AISI 304L and AISI 316LN stainless steel grades at liquid nitrogen temperature (4 K) and at liquid helium temperature (77 K). Uninterrupted tensile experiments, where the sample is continuously deformed under quasi-static loading conditions until fracture, have been carried out with a Single-Section Sample to obtain the stress–strain characteristics of the two grades. [...]
2021 - Published in : Engineering Fracture Mechanics 258 (2021) 108042
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Modeling strain-induced martensitic transformation in austenitic stainless steels subjected to cryogenic temperatures using incremental mean-field homogenization schemes / Fernández-Pisón, P (CERN) ; Vishnu, A R (Carlos III U., Madrid) ; Vadillo, G (CERN) ; Rodríguez-Martínez, J A (CERN)
Austenitic stainless steels are commonly used as structural materials in high-field superconducting magnet systems because they retain high strength, ductility, and toughness at very low temperatures, and they are paramagnetic or antiferromagnetic under the Néel temperature in their fully austenitic state. However, they are susceptible to strain-induced martensitic transformation, especially at cryogenic temperatures, which modifies the material properties, induces volume changes and additional strain hardening, and leads to ferromagnetic behavior. [...]
2024 - 31 p. - Published in : Mech. Mat. 189 (2024) 104891 Fulltext: PDF;
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Microstructure and Mechanical Properties of ITER Correction Coil Case Material / Xin, Jijun (Hefei, Inst. Plasma Phys.) ; Fang, Chao (Hefei, Inst. Plasma Phys.) ; Song, Yuntao (Hefei, Inst. Plasma Phys.) ; Wei, Jing (Hefei, Inst. Plasma Phys.) ; Huang, Chuanjun (Beijing, Tech. Inst. Phys. Chem.) ; Libeyre, Paul (Euratom, St. Paul Lez Durance) ; Simon, Fabrice (Euratom, St. Paul Lez Durance) ; Sgobba, Stefano (CERN)
The modified 316LN austenitic stainless steel was selected as ITER correction coils case material to provide structural reinforcement to the winding pack. Considering the case structure, high-assembling accuracy and other strict requirements, 316LN in special extruded form has been developed. [...]
2017 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 27 (2017) 4201707
- Published in : IEEE Trans. Appl. Supercond. 30 (2019) 9700101
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Effects of Thermocapillary Forces during Welding of 316L-Type Wrought, Cast and Powder Metallurgy Austenitic Stainless Steels / Sgobba, Stefano ; Daniellou, T
The Large Hadron Collider (LHC) is now under construction at the European Organization for Nuclear Research (CERN). This 27 km long accelerator requires 1248 superconducting dipole magnets operating at 1.9 K. [...]
CERN-EST-2002-007-SM.- Geneva : CERN, 2003 - 11 p. - Published in : J. Mater. Process. Technol. 143-144 (2003) 578-83 Access to fulltext document: PDF;
In : Spanish Relativity Meeting, Madrid, Spain, 18 - 21 Sep 2001, pp.578-583 - CERN library copies
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5.
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Friction stir welding of AISI 316LN high strength austenitic stainless steel for cryogenic application / Aviles Santillana, I (CERN) ; Debeux, J (CERN) ; Meyer, M (CERN) ; Muddamallappa, M (Texas A-M) ; Polo Picazo, A (CERN) ; Robe, H (Unlisted, FR) ; Rodriguez Castro, E (CERN ; Madrid U.) ; Sgobba, S (CERN) ; Weiss, KP (KIT, Karlsruhe)
Friction stir welding (FSW) is a solid state joining process that uses the heat generated by the friction of a rotating tool and the base material to join materials together. Due to the fact that the material is never melted, and that extensive plastic deformation is introduced in the weld seam, a unique set of properties is achieved. [...]
2022 - 9 p. - Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1241 (2022) , no. 1, pp. 012003
Fulltext: PDF;
In : Cryogenic Engineering Conference and International Cryogenic Materials Conference, Online, 19 - 23 Jul 2021
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TESLA HF Couplers : Outgassing of Copper Plated AISI 304L Samples / Arnaud, G ; Di Bartolo, G ; Robeiri, A ; Roch, M
LAL-RT-2002-01 ; TESLA-2003-14. - 2002. - 11 p.
Fulltext from DESY - Access to fulltext document - Access to fulltext document
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Constitutive modelling and identification of parameters of the plastic strain-induced martensitic transformation in 316L stainless steel at cryogenic temperatures / Garion, C ; Skoczen, B ; Sgobba, Stefano
The present paper is focused on constitutive modelling and identification of parameters of the relevant model of plastic strain- induced martensitic transformation in austenitic stainless steels at low temperatures. The model used to describe the FCCrightward arrow BCC phase transformation in austenitic stainless steels is based on the assumption of linearization of the most intensive part of the transformation curve. [...]
2006 - Published in : Int. J. Plast. 22 (2006) 1234-64
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Secondary Phases Quantification and Fracture Toughness at Cryogenic Temperature of Austenitic Stainless Steel Welds for High-Field Superconducting Magnets / Santillana, Ignacio Aviles (CERN) ; Pison, Pilar Fernandez (CERN) ; Langeslag, Stefanie Agnes Elisabeth (CERN) ; Sgobba, Stefano (CERN) ; Lunt, Alexander (CERN) ; Boyer, Christelle (Euratom, St. Paul Lez Durance) ; Navas, Elisa Maria Ruiz (Carlos III U., Madrid)
The ITER magnet system is based on the “cable-in-conduit” conductor concept, which consists of various types of stainless steel jackets filled with superconducting strands. The jackets provide high strength and fracture toughness to counteract the high stress imposed by, amongst others, electromagnetic loads at cryogenic temperature. [...]
2018 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4205804
In : 13th European Conference on Applied Superconductivity, ICCG, Geneva, Switzerland, 17 - 21 Sep 2017, pp.4205804
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Flow and fracture of austenitic stainless steels at cryogenic temperatures: experiments and modeling. / Fernandez Pison, Pilar
Austenitic stainless steels are widely used as structural materials in high-field superconducting magnet systems due to their favorable mechanical properties over the whole temperature operating range of the magnets [...]
CERN-THESIS-2023-210 - 229 p.

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Note technique influence du "Vacuum Firing" (VF) sur la durete des aciers inoxydables 304L et 316 LN / Brouet, M
CERN-PS-ML-Tech-Note-87-39.- Geneva : CERN, 1987 - 2 p. Fulltext: PDF;
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