Weldability Approach to Duplex Stainless Steels Using Multicomponent Phase Diagrams

Antonio J. Ramirez; Sérgio Duarte Brandi

doi:10.4028/www.scientific.net/MSF.475-479.2765

Paper Titles

Slag Cleaning Processes: A Growing Concern
p.2745

Effects of Casting Conditions on the Mold Filling Characteristics of Mg Alloy in the EPC Process
p.2753

Microstructure Evolution in a Directional Solidification Process
p.2757

A New Approach to Calculate Liquid-Vapor Surface Energy Using Sessile Droplet Test
p.2761

Weldability Approach to Duplex Stainless Steels Using Multicomponent Phase Diagrams
p.2765

Effect of Sb on the Graphite Morphology and Mechanical Properties in Heavy Section Ductile Iron
p.2769

Spray Forming and Thermal Processing for High Performance Superalloys
p.2773

Recent New Development of Spray Formed Ultrahigh-Carbon Steels
p.2779

Research on Ultra-High Strength Al-11Zn-2.9Mg-1.7Cu Alloy Prepared by Spray Forming Process
p.2785

HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Weldability Approach to Duplex Stainless Steels...

Weldability Approach to Duplex Stainless Steels Using Multicomponent Phase Diagrams

Abstract:

Welding is a non-equilibrium process. However, some weldability issues, as the extension of the heat-affected zone (HAZ) can be addressed using equilibrium phase diagrams. The 70 wt% Fe-Cr-Ni pseudo-binary phase diagram is commonly used to establish the phase transformations during welding of duplex stainless steels. The predicted results are assumed to be reasonably good for most of the duplex stainless steels. Thermodynamic calculations were used to determine multicomponent phase diagrams and volumetric fraction of phases present as a function of temperature several commercial duplex stainless steels. Results showed that simplified pseudobinary phase diagram approach is valid to estimate welded joint microstructures only for the low alloy duplex stainless steels as UNS S32304, but phase transformations and mainly solidification paths of high alloy duplex stainless steels should predicted only using a multi-component phase diagram.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

2765-2768

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.2765

Citation:

Cite this paper

Online since:

January 2005

Authors:

Antonio J. Ramirez, Sérgio Duarte Brandi

Keywords:

Duplex Stainless Steel, Multi-Component Phase Diagram, Weldability

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] J. Charles: Duplex Stainless Steels'94, Proc. Conf., TWI, England, 1994, paper K1.

Google Scholar

[2] A.J. Ramirez: Intermetallic Phases and Secondary Austenite Precipitation at the Multipass HAZ of Duplex Stainless Steels, Ph.D. Thesis, University of São Paulo, Brazil, 2001, p.241.

Google Scholar

[3] L. Karlsson, S. Pak: Duplex Stainless Steels'91, Proc. Conf., Les Editions de Physique, France, 1991, pp.413-420.

Google Scholar

[4] A.J. Ramirez, S.D. Brandi: XXII National Meeting of Welding Technology, Proc. Conf., ABS, São Paulo-Brazil, 1996, pp.277-287.

Google Scholar

[5] S.D. Brandi, A.J. Ramirez: Duplex Stainless Steels'97, Proc. Conf., KCI, The Netherlands, (1997).

Google Scholar

[6] J.C. Lippold, I. Varol, A. Baeslack-III: Welding J., 1994, vol. 73(4), pp. 75s-79s.

Google Scholar

[7] S.D. Brandi, J.C. Lippold, W. Lin: Duplex Stainless Steels'97, Proc. Conf., KCI, The Netherlands, (1997).

Google Scholar

[8] C.P. Serna: Intermetallic Phases Precipitation at the Low Temperature HAZ of Duplex Stainless Steels Multipass Welds, M. Sc. Dissertation, University of São Paulo, Brazil, 2001, 113 pgs.

Google Scholar

[9] A.J. Ramirez, J.C. Lippold, S.D. Brandi: Metall. Mater. Trans. A., 2003, vol. 34A(8), p.15751597.

Google Scholar