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Secondary Phases Precipitation in the 2510 Duplex Stainless Steel

Published online by Cambridge University Press:  01 February 2011

Arturo Reyes ,
Irene Calliari ,
Emilio Ramous ,
Michela Zanellato  and
Mattia Merlin
Arturo Reyes
Affiliation:
Corporacion Mexicana de Investigacion en Materiales COMIMSA, Fracc. Saltello 400, Saltillo, Mexico.
Irene Calliari
Affiliation:
Engineering Chemical Process Dept. DPCI, University of Padua, Via Marzolo 9, 35110 Padua, Italy.
Emilio Ramous
Affiliation:
Engineering Chemical Process Dept. DPCI, University of Padua, Via Marzolo 9, 35110 Padua, Italy.
Michela Zanellato
Affiliation:
Engineering Chemical Process Dept. DPCI, University of Padua, Via Marzolo 9, 35110 Padua, Italy.
Mattia Merlin
Affiliation:
Engineering Dept., University of Ferrara, Via Saragat 1, 44122 Ferrara, Italy.
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Abstract

A lot of duplex and super duplex stainless steels are prone to secondary phases but with different sequence and kinetic which depend on the chemical composition and thermo-mechanical history of the steel. In this paper the results of secondary phase's determination in a welding grade 2510 duplex steel, heat treated at 850–1050°C for 3–30 min are presented. The precipitation stars at grain boundaries with a consistent ferrite transformation for short times. The noses of the TTP curves are at 1000°C (sigma phase) and at 900°C (chi phase) with a partial transformation of chi to sigma, as evidenced in 2205 and 2507 grades.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1242: Symposium 4 – Materials Characterization , 2009 , S4-58
Copyright
Copyright © Materials Research Society 2010

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References

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