About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
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Presentation Title |
Selective Phase Transformation Behavior in the Heterogeneous Microstructured Ti-Zr-Nb-Sn Alloy Manufactured by Directed Energy Deposition |
Author(s) |
Jung Gi Kim, Yukyeong Lee, Shuanglei Li, Eun Seong Kim, Dong Jun Lee, Jae Bok Seol, Hyokyung Sung, Hyoung Seop Kim, Taekyung Lee, Jung Seok Oh, Tae-Hyun Nam |
On-Site Speaker (Planned) |
Jung Gi Kim |
Abstract Scope |
Adjusting the phase transformation behavior in metallic alloys is important for controlling both the strengthening capability and the shape memory effect. Because phase transformation usually occurs in high interfacial energy regions, heterogeneous microstructures with inclusions have a potential to induce a localized phase transformation behavior. In this study, transformation-induced plasticity in a heterogeneous microstructured Ti-Zr-Nb-Sn alloy was investigated. The high interfacial energy between the unmelted Nb particles and the β-Ti matrix supports the initiation of deformation-induced α′′ martensite, while phase transformation was suppressed at grain boundaries. This result indicates that the heterogeneous microstructure design with laser-based additive manufacturing is helpful for manipulating phase transformation at specific regions, which allows the adjustment of the local shape memory effect or plastic deformation in metallic alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Phase Transformations |