Development of FM steels diffusion bonding technologies for blanket manufacturing applications

Rigal, Emmanuel; Marois, G. Le; Lechler, T; Reimann, G.; Schleisiek, K.; Schäfer, L.; Weimar, Peter

doi:10.1016/s0920-3796(00)00358-6

Cited by 19 publications

(3 citation statements)

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“…It is very important to achieve grain boundary mobility across the joint otherwise mechanical properties as good as those of the base material cannot be expected [9]. This joint 'polygonisation' may be hindered in two main instances:…”

Section: Hip Parameters and Post-hip Heat Treatmentmentioning

confidence: 99%

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The manufacturing technologies of the European breeding blankets

Cardella¹,

Rigal

Bedel

et al. 2004

Journal of Nuclear Materials

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Section: Hip Parameters and Post-hip Heat Treatmentmentioning

confidence: 99%

“…However it is well known that tensile testing highlights only basic flaws in the joint [9,12] and much emphasis has been put on impact toughness testing.…”

Section: Joint Mechanical Propertiesmentioning

confidence: 99%

The manufacturing technologies of the European breeding blankets

Cardella¹,

Rigal

Bedel

et al. 2004

Journal of Nuclear Materials

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“…The necessary welding techniques may be divided into two groups: diffusion or solid phase welding [2,[5][6][7][8], and fusion welding (electron beam, laser beam, hybrid MIG/laser [9][10][11]), whereas the first is either performed in a hot isostatic press (HIP) or in a uniaxial hydraulic press, both after different specific joint preparations.…”

Section: Introductionmentioning

confidence: 99%

Diffusion weld study for Test Blanket Module fabrication

Rieth

2009

Fusion Engineering and Design

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(1) Depending on tools and fabrication parameters, surface structures may be quite different, even though their roughness is in the same range (here ±0.6 µm).(2) Depending on the surface structure, more or less cavities remain after diffusion welding at low pressure (1050°C, 25 Mpa, 2 h) with vacuum sealing. Remaining cavities at the weld interface lead to reduced Charpy properties. But weld defects may be restored by applying a second high pressure HIP step (1050°C, 100 Mpa, 2 h) without vacuum sealing. (3) Charpy properties after 1, 2, 3, and 14 days surface oxidation at humid air (before welding at 1150°C, 25 MPa, 2 h). After 2 days oxidation in humid air DBTT is clearly deteriorated. However, there is no loss of upper shelf energy, but some severe scattering results have been observed, even for the reference fabrication process. Surface Fabrication Study Surface Contamination Study(4) Charpy properties after different wetting and cleaning procedures (before welding at 1150°C, 25 MPa, 2 h). Best results are achieved after milling with coolant and cleaning with isopropanol. Furthermore, oil is obviously not a useful protector against oxidation.(5) The micrographs of all weld interfaces show now weld line. That is, from a micro-structural point of view the diffusion welds (peformed at 1150°C, under 25 MPa, for 2 hours) are all perfect, regardless of the fabrication history. The above shown Charpy test results, however, demonstrate that there are differences, anyway.

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Detailed analysis of surface asperity deformation mechanism in diffusion bonding of steel hollow structural components

Zhang

2016

Applied Surface Science

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Development of FM steels diffusion bonding technologies for blanket manufacturing applications

Cited by 19 publications

References 1 publication

The manufacturing technologies of the European breeding blankets

The manufacturing technologies of the European breeding blankets

Diffusion weld study for Test Blanket Module fabrication

Detailed analysis of surface asperity deformation mechanism in diffusion bonding of steel hollow structural components

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