The microstructure and electrochemical properties of additively manufactured 22Cr duplex stainless steel (DSS) and 25Cr super duplex stainless steel (SDSS) produced by laser-powder bed fusion (L-PBF) are reported herein. The as-built microstructure is fully ferritic, while a 50/50 ferrite-austenite phase ratio was achieved by post heat treatment. The electrochemical response of DSS and SDSS prepared by L-PBF was investigated using cyclic potentiodynamic polarization (CPP) tests in 0.6 M NaCl solution and compared with the wrought counterparts. Both 22Cr DSS and 25Cr SDSS prepared by L-PBF showed comparable electrochemical response to their corresponding wrought alloys at room temperature. The findings herein demonstrate the feasibility of additive manufacturing as applied to DSS.
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1 September 2020
Research Article|
June 27 2020
On the Microstructure and Electrochemical Properties of Additively Manufactured Duplex Stainless Steels Produced Using Laser-Powder Bed Fusion Available to Purchase
D. Jiang;
D. Jiang
‡
*Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia.
**Woodside FutureLab, Monash University, Clayton, Victoria 3800, Australia.
‡Corresponding author. E-mail: [email protected].
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N. Birbilis;
N. Birbilis
***College of Engineering and Computer Science, The Australian National University, Acton, Acton 2601, Australia.
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C.R. Hutchinson;
C.R. Hutchinson
*Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia.
**Woodside FutureLab, Monash University, Clayton, Victoria 3800, Australia.
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M. Brameld
M. Brameld
****Woodside Energy, Perth, Western Australia 6000, Australia.
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‡Corresponding author. E-mail: [email protected].
Received:
April 21 2020
Revision Received:
June 27 2020
Accepted:
June 27 2020
Online ISSN: 1938-159X
Print ISSN: 0010-9312
© 2020, NACE International
2020
CORROSION (2020) 76 (9): 871–883.
Article history
Received:
April 21 2020
Revision Received:
June 27 2020
Accepted:
June 27 2020
Citation
D. Jiang, N. Birbilis, C.R. Hutchinson, M. Brameld; On the Microstructure and Electrochemical Properties of Additively Manufactured Duplex Stainless Steels Produced Using Laser-Powder Bed Fusion. CORROSION 1 September 2020; 76 (9): 871–883. https://doi.org/10.5006/3571
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