Strategy for Texture Management in Metals Additive Manufacturing
Abstract
Additive manufacturing (AM) technologies have long been recognized for their ability to fabricate complex geometric components directly from models conceptualized through computers, allowing for complicated designs and assemblies to be fabricated at lower costs, with shorter time to market, and improved function. Lacking behind the design complexity aspect is the ability to fully exploit AM processes for control over texture within AM components. Currently, standard heat-fill strategies utilized in AM processes result in largely columnar grain structures. Here, we propose a point heat source fill for the electron beam melting (EBM) process through which the texture in AM materials can be controlled. Using this point heat source strategy, the ability to form either columnar or equiaxed grain structures upon solidification through changes in the process parameters associated with the point heat source fill is demonstrated for the nickel-base superalloy, Inconel 718. Mechanically, the material is demonstrated to exhibit either anisotropic properties for the columnar-grained material fabricated through using the standard raster scan of the EBM process or isotropic properties for the equiaxed material fabricated using the point heat source fill.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility and Materials Science and Technology Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office
- OSTI Identifier:
- 1361326
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- JOM. Journal of the Minerals, Metals & Materials Society
- Additional Journal Information:
- Journal Volume: 69; Journal Issue: 3; Journal ID: ISSN 1047-4838
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Kirka, Michael M., Lee, Yousub, Greeley, Duncan A., Okello, Alfred, Goin, Michael J., Pearce, Michael T., and Dehoff, Ryan R. Strategy for Texture Management in Metals Additive Manufacturing. United States: N. p., 2017.
Web. doi:10.1007/s11837-017-2264-3.
Kirka, Michael M., Lee, Yousub, Greeley, Duncan A., Okello, Alfred, Goin, Michael J., Pearce, Michael T., & Dehoff, Ryan R. Strategy for Texture Management in Metals Additive Manufacturing. United States. https://doi.org/10.1007/s11837-017-2264-3
Kirka, Michael M., Lee, Yousub, Greeley, Duncan A., Okello, Alfred, Goin, Michael J., Pearce, Michael T., and Dehoff, Ryan R. Tue .
"Strategy for Texture Management in Metals Additive Manufacturing". United States. https://doi.org/10.1007/s11837-017-2264-3. https://www.osti.gov/servlets/purl/1361326.
@article{osti_1361326,
title = {Strategy for Texture Management in Metals Additive Manufacturing},
author = {Kirka, Michael M. and Lee, Yousub and Greeley, Duncan A. and Okello, Alfred and Goin, Michael J. and Pearce, Michael T. and Dehoff, Ryan R.},
abstractNote = {Additive manufacturing (AM) technologies have long been recognized for their ability to fabricate complex geometric components directly from models conceptualized through computers, allowing for complicated designs and assemblies to be fabricated at lower costs, with shorter time to market, and improved function. Lacking behind the design complexity aspect is the ability to fully exploit AM processes for control over texture within AM components. Currently, standard heat-fill strategies utilized in AM processes result in largely columnar grain structures. Here, we propose a point heat source fill for the electron beam melting (EBM) process through which the texture in AM materials can be controlled. Using this point heat source strategy, the ability to form either columnar or equiaxed grain structures upon solidification through changes in the process parameters associated with the point heat source fill is demonstrated for the nickel-base superalloy, Inconel 718. Mechanically, the material is demonstrated to exhibit either anisotropic properties for the columnar-grained material fabricated through using the standard raster scan of the EBM process or isotropic properties for the equiaxed material fabricated using the point heat source fill.},
doi = {10.1007/s11837-017-2264-3},
journal = {JOM. Journal of the Minerals, Metals & Materials Society},
number = 3,
volume = 69,
place = {United States},
year = {Tue Jan 31 00:00:00 EST 2017},
month = {Tue Jan 31 00:00:00 EST 2017}
}
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Works referencing / citing this record:
Influence of build layout and orientation on microstructural characteristics of electron beam melted Alloy 718
journal, September 2018
- Karimi, P.; Sadeghi, E.; Deng, D.
- The International Journal of Advanced Manufacturing Technology, Vol. 99, Issue 9-12
Asymmetric Cracking in Mar-M247 Alloy Builds During Electron Beam Powder Bed Fusion Additive Manufacturing
journal, July 2018
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journal, July 2018
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Effect of Different Post-treatments on the Microstructure of EBM-Built Alloy 718
journal, October 2018
- Goel, Sneha; Ahlfors, Magnus; Bahbou, Fouzi
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Additive manufacturing – a general corrosion perspective
journal, August 2018
- Örnek, Cem
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Characterization of Crystallographic Structures Using Bragg-Edge Neutron Imaging at the Spallation Neutron Source
journal, December 2017
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Effect of Layer-Wise Varying Parameters on the Microstructure and Soundness of Selective Laser Melted INCONEL 718 Alloy
journal, July 2019
- Wang, Xiang; Kang, Jinwu; Wang, Tianjiao
- Materials, Vol. 12, Issue 13
Additive Manufacturing of Alloy 718 via Electron Beam Melting: Effect of Post-Treatment on the Microstructure and the Mechanical Properties
journal, December 2018
- Balachandramurthi, Arun; Moverare, Johan; Mahade, Satyapal
- Materials, Vol. 12, Issue 1
Effect of Layer-Wise Varying Parameters on the Microstructure and Soundness of Selective Laser Melted INCONEL 718 Alloy
journal, July 2019
- Wang, Xiang; Kang, Jinwu; Wang, Tianjiao
- Materials, Vol. 12, Issue 13