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Properties of Vacuum Sintered Duplex Stainless Steels

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Abstract:

This work presents the possibility of obtaining duplex stainless steels through powder metallurgy technology starting from austenitic X2CrNiMo17-12-2, martensitic X6Cr13 powders by controlled addition of alloying elements, such as Cr, Ni, Mo, Cu in the right quantity to obtain the chemical composition of the structure similar to biphasic one. Moreover the ferritic stainless steel X6Cr17 has been mixed to austenitic stainless steel in the ratio of 50%-50% in order to exam the deriving structure after sintering. In the studies behind the preparation of mixes, Schaffler’s diagram was taken into consideration. Prepared mixes of powders have been compacted at 800 MPa and sintered in a vacuum furnace with argon backfilling at 1260°C for 1 hour; after sintering rapid cooling has been applied in N2.

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Periodical:

Advanced Materials Research (Volumes 15-17)

Pages:

828-833

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.15-17.828

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Online since:

February 2006

Authors:

Leszek Adam Dobrzański, Z. Brytan, Marco Actis Grande, Mario Rosso

Keywords:

Powder Metallurgy (PM), Stainless Steel (SS), Vacuum Sintering

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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