About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
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Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
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Presentation Title |
Electron Beam Powder Bed Fused Haynes-282 Builds Containing Thin Wall Struts of Varying Thicknesses |
Author(s) |
Bryan Lim, Hansheng Chen, Keita Nomoto, Zibin Chen, Amy Clarke, Sophie Primig, Xiaozhou Liao, Sudarsanam Suresh Babu, Andrew J. Breen, Simon P. Ringer |
On-Site Speaker (Planned) |
Bryan Lim |
Abstract Scope |
Residual stresses in additively manufactured Ni-based superalloys impact the mechanical performance of as-fabricated parts. Though electron beam powder bed fusion (E-PBF) can produce components with minimal defects and residual stresses, these are often non-zero and significant, due to the inherent variations in thermal signature along the build direction. Here, we present the residual stress distribution measured via neutron diffraction in an as-fabricated Haynes 282 build containing internal cube voids and thin wall struts of varying thicknesses. Complementary local hardness measurements and multi-scale microscopy were used to investigate the influence on structure-property relationships. Observed variations in hardness were rationalised with residual stress distributions and microstructural phenomenology. |