Hardfacing of austenitic stainless steel with nickel-base NiCr alloy

Bhaduri, A. K. ; Albert, S. K. ; Das, C. R. ; Baldev Raj, (2011) Hardfacing of austenitic stainless steel with nickel-base NiCr alloy International Journal of Microstructure and Materials Properties, 6 (1-2). pp. 40-53. ISSN 1741-8410

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Official URL: http://www.inderscience.com/search/index.php?actio...

Related URL: http://dx.doi.org/10.1504/IJMMP.2011.040436


Fast breeder reactors components encounter adhesive/abrasive wear nature and erosion. Hardfacing by weld deposition improves resistance to high temperature wear, especially galling, of mating surfaces in sodium. Based on induced radioactivity rate and shielding considerations, nickel-base E NiCr-B hardfacing alloy was chosen to replace cobalt-base Stellite alloys. Studies on this hardface deposit on austenitic stainless steel substrate demonstrated that deposits after exposure at service temperatures up to 823 K would retain adequate hardness (> RC 40) at end design service-life of 40 years. Also, the plasma transferred arc welding process was chosen for hardfacing to ensure that width of dilution zone could be controlled by optimising deposition parameters. The selection of nickel-base hardfacing alloy and deposition process used for development of hardfacing technology for various components of the Indian prototype fast breeder reactor is discussed.

Item Type:Article
Source:Copyright of this article belongs to Inderscience Publishers.
Keywords:Hardfacing Alloys; Nickel; Chromium; Nicr Alloys; Plasma Transferred Arc Welding; Austenitic Stainless Steel; Long-term Ageing; Hardness; Dilution; Fast Breeder Reactors; Fbr; India; Nuclear Reactors; Nuclear Energy; Nuclear Power; Reactor Components; Wear Resistance; High Temperature Wear; Erosion; Weld Deposition; Radioactivity; Shielding
ID Code:90994
Deposited On:15 May 2012 13:19
Last Modified:15 May 2012 13:19

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