Crystallographic texture engineering through novel melt strategies via electron beam melting: Inconel 718
Abstract
Preliminary research has demonstrated the ability to utilise novel scan strategies in the electron beam melting (EBM) process to establish control of crystallographic texture within Inconel 718 deposits. Conventional EBM scan strategies and process parameters yield coarse columnar grains aligned parallel to the build direction. Through varying process parameters such as beam power, beam velocity, beam focus and scan strategy, the behaviour of the electron beam can be manipulated from a line source to a point source. The net effect of these variations is that the resulting crystallographic texture is controlled in a manner to produce either epitaxial deposits or fully equiaxed deposits. Furthermore, this research demonstrates the ability to change the crystallographic texture on the macroscale indicating that EBM technology can be used to create complex geometric components with both site-specific microstructures and material properties.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Texas A & M Univ., College Station, TX (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1235841
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Materials Science and Technology
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 8; Journal ID: ISSN 0267-0836
- Publisher:
- Taylor & Francis
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Dehoff, Ryan R., Kirka, Michael M., List, III, Frederick Alyious, Unocic, Kinga A., and Sames, William J. Crystallographic texture engineering through novel melt strategies via electron beam melting: Inconel 718. United States: N. p., 2015.
Web. doi:10.1179/1743284714Y.0000000697.
Dehoff, Ryan R., Kirka, Michael M., List, III, Frederick Alyious, Unocic, Kinga A., & Sames, William J. Crystallographic texture engineering through novel melt strategies via electron beam melting: Inconel 718. United States. https://doi.org/10.1179/1743284714Y.0000000697
Dehoff, Ryan R., Kirka, Michael M., List, III, Frederick Alyious, Unocic, Kinga A., and Sames, William J. Mon .
"Crystallographic texture engineering through novel melt strategies via electron beam melting: Inconel 718". United States. https://doi.org/10.1179/1743284714Y.0000000697. https://www.osti.gov/servlets/purl/1235841.
@article{osti_1235841,
title = {Crystallographic texture engineering through novel melt strategies via electron beam melting: Inconel 718},
author = {Dehoff, Ryan R. and Kirka, Michael M. and List, III, Frederick Alyious and Unocic, Kinga A. and Sames, William J.},
abstractNote = {Preliminary research has demonstrated the ability to utilise novel scan strategies in the electron beam melting (EBM) process to establish control of crystallographic texture within Inconel 718 deposits. Conventional EBM scan strategies and process parameters yield coarse columnar grains aligned parallel to the build direction. Through varying process parameters such as beam power, beam velocity, beam focus and scan strategy, the behaviour of the electron beam can be manipulated from a line source to a point source. The net effect of these variations is that the resulting crystallographic texture is controlled in a manner to produce either epitaxial deposits or fully equiaxed deposits. Furthermore, this research demonstrates the ability to change the crystallographic texture on the macroscale indicating that EBM technology can be used to create complex geometric components with both site-specific microstructures and material properties.},
doi = {10.1179/1743284714Y.0000000697},
journal = {Materials Science and Technology},
number = 8,
volume = 31,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 2015},
month = {Mon Jun 01 00:00:00 EDT 2015}
}
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