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General Information
    • ISSN: 1793-8198 (Print)
    • Abbreviated Title: Int. J. Mater. Mech. Manuf.
    • Frequency: Bimonthly
    • DOI: 10.18178/IJMMM
    • Editor-in-Chief: Prof. Ian McAndrew
    • Co-editor-in-Chief: Prof. K. M. Gupta
    • Executive Editor: Cherry L. Chen
    • Abstracting/Indexing: EI (INSPEC, IET), Chemical Abstracts Services (CAS),  ProQuest, Crossref, Ulrich's Periodicals Directory,  EBSCO.
    • E-mail ijmmm@ejournal.net

Editor-in-chief
Prof. Ian McAndrew
Capitol Technology University, USA
It is my honor to be the editor-in-chief of IJMMM. I will do my best to work with the editorial team and help make this journal better.

IJMMM 2019 Vol.7(6): 254-258 ISSN: 1793-8198
DOI: 10.18178/ijmmm.2019.7.6.470

Effect of Solution Treatment on Microstructure and Mechanical Properties of 2205 Duplex Stainless Steel

Mohan Mehta, Pravin Jadhav, Afroz Shaikh, Santosh Kumar, and Shreyas Kirwai1
Abstract—Duplex stainless steels have dual phase microstructure consisting of approximately equal volume fraction of ferrite and austenite. Volume fraction of phases significantly affects mechanical properties of duplex stainless steels. In the present work, effect of solution treatment temperatures (in the range of 900 – 1150 °C) on microstructure (phase % of ferrite and austenite) and mechanical properties like tensile (room temperature (RT)) and Charpy impact (RT and -25 °C) of duplex stainless steel, 2205 were investigated. Analysis indicates that with increase in solution treatment temperature, % ferrite phase increases and % austenite phase decreases. 50 – 50% combination of both phases was obtained around 1020 °C. Tensile test results indicate that yield strength and ultimate tensile strength remains similar for all temperatures. Maximum Charpy strength was obtained at 1050 °C. A sudden drop in charpy strength was observed at 950 °C for both RT and -25 °C tests. Microstructural and SEM analysis reveals the presence of intermetallic phases like sigma (σ) and chi (χ), precipitated at ferrite/ferrite boundary and ferrite/austenite grain boundary which may cause the decrease in impact properties.

Index Terms—Duplex stainless steel, chi (χ) and sigma (σ) phase.

The authors are with the Kalyani Centre for Technology & Innovation, Bharat Forge Limited, Pune 411036, India (e-mail: mohan.mehta@bharatforge.com).

[PDF]

Cite: Mohan Mehta, Pravin Jadhav, Afroz Shaikh, Santosh Kumar, and Shreyas Kirwai1, "Effect of Solution Treatment on Microstructure and Mechanical Properties of 2205 Duplex Stainless Steel," International Journal of Materials, Mechanics and Manufacturing vol. 7, no. 6, pp. 254-258, 2019.

Copyright © 2019 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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