About this Abstract |
| Meeting |
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
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| Symposium
|
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
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| Presentation Title |
Linking Extended CCT Diagrams with In Situ Infrared Thermography for Spatially Resolved Phase Transformation Mapping in Additively Manufactured 410 Stainless Steel |
| Author(s) |
Rangasayee Kannan, Yousub Lee, Mario Parra, Yiyu Wang, Miguel Hoffmann, Bryan Lim, Peeyush Nandwana |
| On-Site Speaker (Planned) |
Rangasayee Kannan |
| Abstract Scope |
Additive manufacturing of martensitic stainless steels involves rapid, repeated thermal cycling that drives complex, spatially varying phase transformations with important consequences for microstructure evolution, residual stress distribution, and performance. This talk presents a framework for linking in situ thermal monitoring with ex situ phase transformation mapping to understand how local process conditions govern material evolution during deposition. By combining real-time infrared sensing with cooling-curve analysis and additive-manufacturing-relevant continuous cooling transformation (CCT) data, the work shows that transformation behavior is highly path-dependent and that critical temperatures associated with both δ→γ and γ→α′ transformations can vary across a build according to local thermal history. More broadly, the results point to adopting a dynamic interpass temperature control during deposition and use process relevant CCT diagrams for accurate microstructure and residual stress modeling. |
| Proceedings Inclusion? |
Undecided |