About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Environmental Degradation of Additively Manufactured Alloys
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Presentation Title |
Comparison of Voids Swelling in Additively Manufactured and Cold-worked 316L SSs After Self-ion Irradiations at Elevated Temperatures |
Author(s) |
Miao Song, Li Jiang, Youxing Chen, Xiaoyuan Lou |
On-Site Speaker (Planned) |
Miao Song |
Abstract Scope |
Additively manufactured 316L SSs were originally thought to possess better irradiation resistance compared to its coarse-grained counterpart. However, recent results from proton and Fe ion irradiations both show an enhanced swelling in additively manufactured 316L SSs over its coarse-grained counterparts. These observation leads to the confusion about the role of coldwork or substructure in voids swelling. Here, we investigated six structure variants of 316L SSs including variants with 0, 10%, 20% and 40% coldwork, variants with ultrafine grained structure, variants with cell structure produced by additive manufacture. These alloys were irradiated with Fe2+ ions to 50dpa at elevated temperatures. Voids welling were systematically characterized by the STEM dark field technique. While revisiting the effect of coldwork on swelling, this study also provides new insight in the similarity or not of cold worked structure and additively manufactured structure with a specific emphasis on voids swelling behavior in ion irradiated 316L SSs. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |