Selection of hardfacing material for components of the Indian Prototype Fast Breeder Reactor

Bhaduri, A.K.; Indira, R.; Albert, Shaju K.; Rao, B. Hanumantha; Jain, S. C.; Asokkumar, S.

doi:10.1016/j.jnucmat.2004.05.005

Cited by 69 publications

(28 citation statements)

References 3 publications

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“…Subsequent relative movement between components causes material transfer from one mating surface to another due to repeated self-welding and breaking at the contact points of the mating surfaces. This ultimately results in galling, a severe form of adhesive wear [1].…”

Section: Introductionmentioning

confidence: 99%

Study on microstructure and wear properties of different nickel base hardfacing alloys deposited on austenitic stainless steel

Chakraborty

Kumar

Das

et al. 2014

Surface and Coatings Technology

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Section: Introductionmentioning

confidence: 99%

Study on microstructure and wear properties of different nickel base hardfacing alloys deposited on austenitic stainless steel

Chakraborty

Kumar

Das

et al. 2014

Surface and Coatings Technology

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“…5.3. It has been reported that the Colmonoy 5 deposit can withstand its as-deposited hardness to the large range of temperatures [49]. These precipitates are beneficial to withstand high temperature hardness of the coating.…”

Section: Nickel Base Alloysmentioning

confidence: 99%

Hardfacing for Wear, Erosion and Abrasion

Badisch

Roy

2013

Surface Engineering for Enhanced Performance Against Wear

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Weld overlay coatings also known as hardfacing is a method which involves solidification for applied coatings. This method is as old as welding process and was first applied by J.W. Spencer in 1896. This technique offers unique advantages over other processes in that the overlay/substrate weld provides a metallurgical bond which is not susceptible to spallation and can easily be applied free of porosity and other defects. Weld deposits can have a thickness as high as 10 mm. Hardfacing process can be carried out easily even in on site. The process is also extremely versatile as a large variety of materials can be deposited for protection against degradation.Weld overlay coatings can be classified under four different categories. These are (1) surface cladding where a thick layer of materials is applied and the overlay layer can have completely different composition from the substrate, (2) hardfacing where a materials more resistant to degradation is applied with good metallurgical bonding and the composition can be close in terms of composition to that of the substrate, (3) build up where a weld deposit is applied to restore the original dimension of the component and the composition of the build layer is exactly similar to that of the substrate and (4) buttering where an intermediate layer is deposited before applying the final coating.The materials used for hardfacing should have melting point close to or lower than the substrate materials. During hardfacing, the temperature of the coating

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“…The upper and lower plates are slit exactly in a similar array of triangular shape, and the sleeves link to the corresponding holes. The subassemblies rest on a hardfaced surface [16]. The bottom of the subassemblies exists inside the sleeve.…”

Section: Grid Plate In a Nuclear Reactormentioning

confidence: 99%

Measurement of the Residual Stresses and Investigation of Their Effects on a Hardfaced Grid Plate due to Thermal Cycling in a Pool Type Sodium-Cooled Fast Reactor

Balaguru¹,

Vela

Chellapandi

2016

Science and Technology of Nuclear Installations

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In sodium-cooled fast reactors (SFR), grid plate is a critical component which is made of 316 L(N) SS. It is supported on core support structure. The grid plate supports the core subassemblies and maintains their verticality. Most of the components of SFR are made of 316 L(N)/304 L(N) SS and they are in contact with the liquid-metal sodium which acts as a coolant. The peak operating temperature in SFR is 550 ∘ C. However, the self-welding starts at 500 ∘ C. To avoid self-welding and galling, hardfacing of the grid plate has become necessary. Nickel based cobalt-free colmonoy 5 has been identified as the hardfacing material due to its lower dose rate by Plasma Transferred Arc Welding (PTAW). This paper is concerned with the measurement and investigations of the effects of the residual stress generated due to thermal cycling on a scale-down physical model of the grid plate. Finite element analysis of the hardfaced grid plate model is performed for obtaining residual stresses using elastoplastic analysis and hence the results are validated. The effects of the residual stresses due to thermal cycling on the hardfaced grid plate model are studied.

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Selection of hardfacing material for components of the Indian Prototype Fast Breeder Reactor

Cited by 69 publications

References 3 publications

Study on microstructure and wear properties of different nickel base hardfacing alloys deposited on austenitic stainless steel

Study on microstructure and wear properties of different nickel base hardfacing alloys deposited on austenitic stainless steel

Hardfacing for Wear, Erosion and Abrasion

Measurement of the Residual Stresses and Investigation of Their Effects on a Hardfaced Grid Plate due to Thermal Cycling in a Pool Type Sodium-Cooled Fast Reactor

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