Linking thermal history to mechanical behavior in directed energy deposited materials

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Additive manufacturing is a promising process that has the capability for process optimization and materials development of novel, multi-material and functional components of complex geometries due to the rapid and localized directional solidification of molten metallic alloys. Directed energy deposition, an additive manufacturing process that uses a high powered laser to melt blown metallic powder, introduces large gradients and sensitivity in thermal histories within a built component that lead to unique phase transformations, microstructures, residual stress and anisotropic mechanical behavior. Control of the overall mechanical behavior of DED-built components relies on control of thermal history at localized areas. Research at Northwestern University, in collaboration with Argonne National Laboratory, uses in-situ monitoring techniques such as infrared (IR) cameras, an IR two-wave pyrometer to monitor the melt pool, and a high-powered synchrotron to capture the phase change during build. Relationships between temperature, solidification rate and thermal gradient are made with the resulting microstructural characteristic and mechanical behavior at localized areas of each build. Linking thermal history to mechanical behavior of additively-built parts will lead to increased thermal control for optimal properties and open the door to alloy development.

Original languageEnglish (US)
Title of host publicationMechanics of Additive and Advanced Manufacturing, Volume 8 - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics
EditorsHelena Jin, Sharlotte Kramer, Jay Carroll, Alison M. Beese, Jennifer L. Jordan
PublisherSpringer New York LLC
Pages97-98
Number of pages2
ISBN (Print)9783319950822
DOIs
StatePublished - Jan 1 2019
EventSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2018 - Greenville, United States
Duration: Jun 4 2018Jun 7 2018

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2018
CountryUnited States
CityGreenville
Period6/4/186/7/18

Fingerprint

3D printers
Solidification
Infrared radiation
Pyrometers
Synchrotrons
Thermal gradients
Molten materials
Residual stresses
Phase transitions
Cameras
Powders
Microstructure
Geometry
Hot Temperature
Lasers
Monitoring
Temperature

Keywords

  • Additive manufacturing
  • Characterization
  • Directed energy deposition
  • Metal

ASJC Scopus subject areas

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

Cite this

Cao, J. (2019). Linking thermal history to mechanical behavior in directed energy deposited materials. In H. Jin, S. Kramer, J. Carroll, A. M. Beese, & J. L. Jordan (Eds.), Mechanics of Additive and Advanced Manufacturing, Volume 8 - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics (pp. 97-98). (Conference Proceedings of the Society for Experimental Mechanics Series). Springer New York LLC. https://doi.org/10.1007/978-3-319-95083-9_17
Cao, Jian. / Linking thermal history to mechanical behavior in directed energy deposited materials. Mechanics of Additive and Advanced Manufacturing, Volume 8 - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics. editor / Helena Jin ; Sharlotte Kramer ; Jay Carroll ; Alison M. Beese ; Jennifer L. Jordan. Springer New York LLC, 2019. pp. 97-98 (Conference Proceedings of the Society for Experimental Mechanics Series).
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Cao, J 2019, Linking thermal history to mechanical behavior in directed energy deposited materials. in H Jin, S Kramer, J Carroll, AM Beese & JL Jordan (eds), Mechanics of Additive and Advanced Manufacturing, Volume 8 - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics. Conference Proceedings of the Society for Experimental Mechanics Series, Springer New York LLC, pp. 97-98, SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2018, Greenville, United States, 6/4/18. https://doi.org/10.1007/978-3-319-95083-9_17

Linking thermal history to mechanical behavior in directed energy deposited materials. / Cao, Jian.

Mechanics of Additive and Advanced Manufacturing, Volume 8 - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics. ed. / Helena Jin; Sharlotte Kramer; Jay Carroll; Alison M. Beese; Jennifer L. Jordan. Springer New York LLC, 2019. p. 97-98 (Conference Proceedings of the Society for Experimental Mechanics Series).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Cao J. Linking thermal history to mechanical behavior in directed energy deposited materials. In Jin H, Kramer S, Carroll J, Beese AM, Jordan JL, editors, Mechanics of Additive and Advanced Manufacturing, Volume 8 - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics. Springer New York LLC. 2019. p. 97-98. (Conference Proceedings of the Society for Experimental Mechanics Series). https://doi.org/10.1007/978-3-319-95083-9_17