About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development IV: Rapid Development
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Presentation Title |
Functionally Graded Alloys from 316 Stainless Steel to Inconel 718 by Powder-based Laser Direct Energy Deposition |
Author(s) |
Kun Li, Jianbin Zhan, Qian Tang, David Z. Zhang, Wei Xiong, Huajun Cao |
On-Site Speaker (Planned) |
Kun Li |
Abstract Scope |
Additive manufacturing (AM) is an efficient method to fabricate complex geometry functionally graded materials (FGMs) with gradually variable composition and structures as a function of position, allowing for the local tailoring of properties instead of the costly need for extraneous welds and joints. In this work, a laser-based directed energy deposition (DED) process was carried out to develop a series of compositionally graded joints from 316 stainless steel to Inconel 718 alloy through computational analysis and experimental characterization. Compared to the traditional joint, AM graded materials have more gradient composition and microstructure, with a complex evolution of phases like MX and Nix(Al,Ti,Nb) during printing and post homogenization heat treatment. The computational-experimental approach is a promising method to design good properties of dissimilar metal joints. The gradient zone that can be flexibly tuned by AM process provides a high throughput design through local tailoring of properties to develop new functional materials. |
Proceedings Inclusion? |
Planned: |