About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
Presentation Title |
Optimizing the High Temperature Mechanical Performance of Haynes 282 Printed via Laser Powder Bed Fusion |
Author(s) |
Nicholas L. Lamprinakos, Anthony Rollett |
On-Site Speaker (Planned) |
Nicholas L. Lamprinakos |
Abstract Scope |
The microstructures of metal parts produced via additive manufacturing (AM) are often very different than those produced by other methods such as casting or forging. Oftentimes, the as-built AM parts are strongly textured and thus have anisotropic mechanical properties. While for many applications this may be undesirable, there are certain cases, such as when creep must be limited, in which this could be advantageous. In this work, the superalloy Haynes 282 was printed via laser powder bed fusion. The effect of process parameter selection on microstructure and high temperature mechanical properties was studied, with a focus on developing highly textured microstructures. Experimental heat treatments were performed to determine a heat treatment cycle that could preserve the original texture of the AM parts while also allowing the desired precipitate structure to form. A modified Potts model was also utilized to predict the printed microstructure based on the input process parameters. |