About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
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Symposium
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Alloy Phase Transformations at Elevated Temperatures
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Presentation Title |
Tracking Changes in Microstructure and Mechanical Properties of Electron Powder Bed Fusion Produced Inconel-738 |
Author(s) |
Andrew J. Breen, Bryan Lim, Felix Theska, Alec C. Day, Sophie Primig, Simon P. Ringer |
On-Site Speaker (Planned) |
Andrew J. Breen |
Abstract Scope |
Electron powder bed fusion technology offers exciting opportunities for producing Ni-based superalloy components from alloys such as Inconel-738 (IN738) but questions remain as to how the processing parameters influence the resulting microstructure and properties. One important consideration is how gamma prime, the major strengthening phase, evolves throughout a build and how this can be controlled for optimal mechanical performance. In this presentation, the changing morphology and chemistry of gamma prime in a cuboid IN738 build printed using a random scan strategy on an Arcam Q10 system is reported on. Atom probe tomography (APT) and complementary scanning electron microscopy (SEM) and electron back-scattered diffraction (EBSD) are used to quantify changes in volume fraction, chemistry and ordering behaviour in gamma prime throughout the build height. Indentation hardness tests are also performed to determine how the changing nature of gamma prime influences mechanical properties. |