Overview of recent European materials R&amp;D activities related to ITER

Peacock, Alan T.; Barabash, V.; Dänner, W.; Rödig, M.; Lorenzetto, P.; Marmy, P.; Merola, M.; Singh, B.N.; Tähtinen, Seppo; Laan, J. van der; Wu, C.H.

doi:10.1016/j.jnucmat.2004.04.008

Cited by 31 publications

(22 citation statements)

References 5 publications

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“…Due to the strain-controlled loading nature progressive accumulation of plastic strains (incremental plastic collapse) will not occur [6]. Even the initially hardened CuCrZr heat sink may possibly experience such detrimental effect, when CuCrZr alloy undergoes irreversible softening caused by over-ageing [7]. This softening effect can occur by long term normal operation or by some accidental events.…”

Section: Introductionmentioning

confidence: 99%

Material parameters of copper and CuCrZr alloy for cyclic plasticity at elevated temperatures

You

Miśkiewicz

2008

Journal of Nuclear Materials

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In this work material parameters of cyclic plasticity for soft copper and CuCrZr alloy were determined using the combined non-linear isotropic and kinematic hardening law (the Frederick-Armstrong-Chaboche model) for the temperature range between 20 °C and 550 °C. These parameters are the initial kinematic hardening modulus, the rate of change of kinematic hardening modulus, the maximum change in the size of the yield surface and the rate of change of the yield surface size. Both precipitation-hardened and annealing-softened states were examined for CuCrZr alloy. A series of strain-controlled cyclic tensioncompression tests were conducted at four temperature levels. The parameters were calibrated with the stabilised loops of stress-strain curves. The predicted stabilised loops from FEM simulation with the calibrated parameters showed good agreement with the experimental result demonstrating the validity of the considered constitutive model.

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Section: Introductionmentioning

confidence: 99%

Material parameters of copper and CuCrZr alloy for cyclic plasticity at elevated temperatures

You

Miśkiewicz

2008

Journal of Nuclear Materials

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“…Results from the European material development programme have shown that for cooling rates above 50 • C/min and similar ageing heat treatments, the tensile properties of the Cu-Cr-Zr are similar to the tensile properties obtained with the optimum heat treatment recommended by the material suppliers [2]. Two alternative processes are therefore being considered to achieve the required cooling rate: a HIP cycle with fast cooling in the HIP vessel (HIP quenching) or a normal HIP cycle with a subsequent heat treatment in a furnace with fast cooling.…”

Section: Solid Hip Fabrication Routementioning

confidence: 65%

“…The 316L(N)-IG SS backing plate with drilled holes and machined water headers, the grooved Cu alloy plates and the 316L(N)-IG SS tubes are joined together with one single HIP cycle at 1040 • C and 140 MPa for 2 h. This temperature is the outcome of a material development work and is the optimum temperature for joining simultaneously Cu alloy to Cu alloy, Cu alloy to 316L(N)-IG SS and 316L(N)-IG SS to 316L(N)-IG SS [2].…”

Section: Solid Hip Fabrication Routementioning

confidence: 99%

“…The best results so far from this development work [2,5], which includes shear and torque tests on small scale test specimens and HHF tests of representative FW mock-ups, have been obtained at 580 • C and 140 MPa for 2 h. A FW panel prototype has therefore been manufactured by the CEA under these conditions to demonstrate the feasibility at full scale of this joining technique (panel no. 2 in Table 1).…”

Section: Be/cu-cr-zr Solid Hippingmentioning

confidence: 99%

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Manufacture of blanket shield modules for ITER

Lorenzetto

Boireau²,

Boudot³

et al. 2005

Fusion Engineering and Design

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“…Joints of Cu//SS type will be widely used in ITER high-heat flux components like the divertor and first wall [1][2][3]. At present, two joining technologies, i.e.…”

Section: Introductionmentioning

confidence: 99%