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Journal of Materials Engineering and Performance
Published in: Journal of Materials Engineering and Performance 6/2014

01-06-2014

The Effect of Microstructural Evolution on Hardening Behavior of 2205 Stainless Steel in Long-Term Aging at 500 °C

Authors: Shukun Shi, Guodong Ma, Bo Guo, Kuanjun Fang, Jun Wang

Published in: Journal of Materials Engineering and Performance | Issue 6/2014

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Abstract

The effect of microstructural evolution on hardening behavior of 2205 stainless steel in long-term aging at 500 °C was studied by optical microscope, scanning electron microscope, and transmission electron microscope. The results showed that the hardness of ferrite phase in matrix steadily increased with the aging time at the first stage of 4 months, presented a peak of hardness at about 5 months, and showed a downward trend for the aging time from 6 to 8 months, while the hardness of the austenitic phase remained constant. Analysis showed that the iron-rich α phase and the Cr-rich α′ phase generated by spinodal decomposition, Cr2N precipitations, and Fe2Mn (R-phase) were the main reasons for the generation of peak in hardness of ferrite phase. Further studies showed that some dislocation structure (changing with the aging time) in δ-ferrite of matrix is related to the microstructural evolution.
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Metadata
Title
The Effect of Microstructural Evolution on Hardening Behavior of 2205 Stainless Steel in Long-Term Aging at 500 °C
Authors
Shukun Shi
Guodong Ma
Bo Guo
Kuanjun Fang
Jun Wang
Publication date
01-06-2014
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 6/2014
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-014-0978-8

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