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ECN publicatie:
Titel:
Friction Stir Welding (FSW) of 9% Cr steel (P91)
 
Auteur(s):
Schuring, E.W.; Luzginova, N.V.; Kolluri, M.
 
Gepubliceerd door: Publicatie datum:
ECN Environment & Energy Engineering 27-11-2013
 
ECN publicatienummer: Publicatie type:
ECN-L--13-074 Presentatie
 
Aantal pagina's: Volledige tekst:
24 Download PDF  (5097kB)

Gepresenteerd op: NIL BIL lassymposium , Antwerpen, België, 27 november 2013.

Samenvatting:
Materials: Ferritic/martensitic (F/M) steels and ODS steels are considered as candidates for the advanced fast nuclear reactor cladding/duct materials because of their excellent radiation resistance and low swelling rate compared to austenitic stainless steels. Motivation: Joining of these materials without destroying their characteristic microstructure is challenging. Consequently, suitable non-melting techniques for joining of F/M steels and ODS steels are being developed for the Generation IV nuclear reactors, e.g. Explosion welding, brazing and Friction Stir Welding. Objective: to assess its suitability of FSW for joining of the advanced steels for the Generation IV nuclear applications. Approach: An extensive characterization of the friction stir weld produced from P91 steel was performed in comparison with its base material properties. Influence of the post weld tempering heat treatment (PWHT) on the mechanical and microscopic properties was studied.


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