Comparison of residual stresses in Inconel 718 simple parts made by electron beam melting and direct laser metal sintering
Abstract
Residual stress profiles were mapped using neutron diffraction in two simple prism builds of Inconel 718: one fabricated with electron beam melting and the other with direct laser sintering. Spatially indexed stress-free cubes were obtained by EDM sectioning equivalent prisms of similar shape. The (311) interplanar spacing examined for the EDM sectioned sample was compared to the interplanar spacings calculated to fulfill force and moment balance. We have shown that Applying force and moment balance is a necessary supplement to the measurements for the stress-free cubes with respect to accurate stress calculations in additively manufactured components. Furthermore, our work has shown that residual stresses in electron beam melting parts are much smaller than that of direct laser metal sintering parts.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC)
- OSTI Identifier:
- 1185504
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
- Additional Journal Information:
- Journal Volume: 46; Journal Issue: 3; Journal ID: ISSN 1073-5623
- Publisher:
- ASM International
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Inconel 718; residual stess; electron beam melting; direct laser metal sintering; neutron diffraction
Citation Formats
Kolbus, Lindsay M., Payzant, E. Andrew, Cornwell, Paris A., Watkins, Thomas R., Babu, Sudarsanam Suresh, Dehoff, Ryan R., Duty, Chad E., Lorenz, M., and Ovchinnikova, O. S. Comparison of residual stresses in Inconel 718 simple parts made by electron beam melting and direct laser metal sintering. United States: N. p., 2015.
Web. doi:10.1007/s11661-014-2722-2.
Kolbus, Lindsay M., Payzant, E. Andrew, Cornwell, Paris A., Watkins, Thomas R., Babu, Sudarsanam Suresh, Dehoff, Ryan R., Duty, Chad E., Lorenz, M., & Ovchinnikova, O. S. Comparison of residual stresses in Inconel 718 simple parts made by electron beam melting and direct laser metal sintering. United States. https://doi.org/10.1007/s11661-014-2722-2
Kolbus, Lindsay M., Payzant, E. Andrew, Cornwell, Paris A., Watkins, Thomas R., Babu, Sudarsanam Suresh, Dehoff, Ryan R., Duty, Chad E., Lorenz, M., and Ovchinnikova, O. S. Sat .
"Comparison of residual stresses in Inconel 718 simple parts made by electron beam melting and direct laser metal sintering". United States. https://doi.org/10.1007/s11661-014-2722-2. https://www.osti.gov/servlets/purl/1185504.
@article{osti_1185504,
title = {Comparison of residual stresses in Inconel 718 simple parts made by electron beam melting and direct laser metal sintering},
author = {Kolbus, Lindsay M. and Payzant, E. Andrew and Cornwell, Paris A. and Watkins, Thomas R. and Babu, Sudarsanam Suresh and Dehoff, Ryan R. and Duty, Chad E. and Lorenz, M. and Ovchinnikova, O. S.},
abstractNote = {Residual stress profiles were mapped using neutron diffraction in two simple prism builds of Inconel 718: one fabricated with electron beam melting and the other with direct laser sintering. Spatially indexed stress-free cubes were obtained by EDM sectioning equivalent prisms of similar shape. The (311) interplanar spacing examined for the EDM sectioned sample was compared to the interplanar spacings calculated to fulfill force and moment balance. We have shown that Applying force and moment balance is a necessary supplement to the measurements for the stress-free cubes with respect to accurate stress calculations in additively manufactured components. Furthermore, our work has shown that residual stresses in electron beam melting parts are much smaller than that of direct laser metal sintering parts.},
doi = {10.1007/s11661-014-2722-2},
journal = {Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science},
number = 3,
volume = 46,
place = {United States},
year = {Sat Jan 10 00:00:00 EST 2015},
month = {Sat Jan 10 00:00:00 EST 2015}
}
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