An integrated computational materials engineering-anchored closed-loop method for design of aluminum alloys for additive manufacturing

Saket Thapliyal; Mageshwari Komarasamy; Shivakant Shukla; Le Zhou; Holden Hyer; Sharon Park; Yongho Sohn; Rajiv S. Mishra

doi:10.1016/j.mtla.2019.100574

An integrated computational materials engineering-anchored closed-loop method for design of aluminum alloys for additive manufacturing

Saket Thapliyal, Mageshwari Komarasamy, Shivakant Shukla, Le Zhou, Holden Hyer, Sharon Park, Yongho Sohn, Rajiv S. Mishra

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

A closed-loop approach based on integrated computational material engineering was used to design, fabricate and characterize an Al–1.5Cu–0.8Sc–0.4Zr (wt%) alloy for laser powder bed fusion additive manufacturing (AM). Finalization of composition and prediction of solidification behavior and mechanical properties were done using calculation of phase diagrams (CALPHAD) and analytical tools. The microstructure of the printed alloy in as-built condition consisted of crack-free regions with fine-equiaxed grains which was consistent with CALPHAD results. Yield strength (YS) of ~349 ± 8 MPa was also in more than 90% agreement with predicted YS. The findings demonstrate an efficient methodology for application-based alloy design for AM.

Original language	English
Article number	100574
Journal	Materialia
Volume	9
DOIs	https://doi.org/10.1016/j.mtla.2019.100574
State	Published - Mar 2020
Externally published	Yes

Funding

The work was sponsored by the Office of Naval Research under the ONR Award # N00014-17-1-2559 . The authors thank materials research facility (MRF) at UNT for microscopy facility. The authors also acknowledge Ms. Advika Chesetti for helping to prepare samples for microscopy.

Keywords

Additive manufacturing (AM)
Alloy design
Aluminum alloys
Atomization
CALPHAD

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10.1016/j.mtla.2019.100574

Cite this

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title = "An integrated computational materials engineering-anchored closed-loop method for design of aluminum alloys for additive manufacturing",

abstract = "A closed-loop approach based on integrated computational material engineering was used to design, fabricate and characterize an Al–1.5Cu–0.8Sc–0.4Zr (wt%) alloy for laser powder bed fusion additive manufacturing (AM). Finalization of composition and prediction of solidification behavior and mechanical properties were done using calculation of phase diagrams (CALPHAD) and analytical tools. The microstructure of the printed alloy in as-built condition consisted of crack-free regions with fine-equiaxed grains which was consistent with CALPHAD results. Yield strength (YS) of ~349 ± 8 MPa was also in more than 90% agreement with predicted YS. The findings demonstrate an efficient methodology for application-based alloy design for AM.",

keywords = "Additive manufacturing (AM), Alloy design, Aluminum alloys, Atomization, CALPHAD",

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AU - Thapliyal, Saket

AU - Komarasamy, Mageshwari

AU - Shukla, Shivakant

AU - Zhou, Le

AU - Hyer, Holden

AU - Park, Sharon

AU - Sohn, Yongho

AU - Mishra, Rajiv S.

PY - 2020/3

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N2 - A closed-loop approach based on integrated computational material engineering was used to design, fabricate and characterize an Al–1.5Cu–0.8Sc–0.4Zr (wt%) alloy for laser powder bed fusion additive manufacturing (AM). Finalization of composition and prediction of solidification behavior and mechanical properties were done using calculation of phase diagrams (CALPHAD) and analytical tools. The microstructure of the printed alloy in as-built condition consisted of crack-free regions with fine-equiaxed grains which was consistent with CALPHAD results. Yield strength (YS) of ~349 ± 8 MPa was also in more than 90% agreement with predicted YS. The findings demonstrate an efficient methodology for application-based alloy design for AM.

AB - A closed-loop approach based on integrated computational material engineering was used to design, fabricate and characterize an Al–1.5Cu–0.8Sc–0.4Zr (wt%) alloy for laser powder bed fusion additive manufacturing (AM). Finalization of composition and prediction of solidification behavior and mechanical properties were done using calculation of phase diagrams (CALPHAD) and analytical tools. The microstructure of the printed alloy in as-built condition consisted of crack-free regions with fine-equiaxed grains which was consistent with CALPHAD results. Yield strength (YS) of ~349 ± 8 MPa was also in more than 90% agreement with predicted YS. The findings demonstrate an efficient methodology for application-based alloy design for AM.

KW - Additive manufacturing (AM)

KW - Alloy design

KW - Aluminum alloys

KW - Atomization

KW - CALPHAD

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An integrated computational materials engineering-anchored closed-loop method for design of aluminum alloys for additive manufacturing

Abstract

Funding

Keywords

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