Relating additively manufactured part tensile properties to thermal metrics

Jennifer Bennett; Jennifer Glerum; Jian Cao

doi:10.1016/j.cirp.2021.04.053

Relating additively manufactured part tensile properties to thermal metrics

Jennifer Bennett, Jennifer Glerum, Jian Cao^*

^*Corresponding author for this work

Mechanical Engineering

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

14 Scopus citations

Abstract

This study examines the relationship between thermal histories obtained via IR imagery and final local mechanical properties in Inconel 718 walls built via directed energy deposition. Four processing conditions were designed to provide distinct thermal histories in twelve built walls. Mechanical properties were obtained from miniature tensile samples cut from various locations within each wall. The work identified two critical temperature ranges associated with microstructure evolution and demonstrated the capability to predict properties based on time spent in the two ranges, paving the way for future process control.

Original language	English (US)
Pages (from-to)	187-190
Number of pages	4
Journal	CIRP Annals
Volume	70
Issue number	1
DOIs	https://doi.org/10.1016/j.cirp.2021.04.053
State	Published - Jan 2021

Funding

We thank David Simeroth for his IR image processing aid, Kornel Ehmann for reviewing the manuscript, financial support from the Army Research Lab (W911NF-18–2–0275) and the use of Northwestern core facilities supported by the SHyNE Resource (NSF ECCS-2025633) and MRSEC program (NSF DMR-1720139).

Keywords

Additive manufacturing
Tensile strength
Thermal effects

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.cirp.2021.04.053

Cite this

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abstract = "This study examines the relationship between thermal histories obtained via IR imagery and final local mechanical properties in Inconel 718 walls built via directed energy deposition. Four processing conditions were designed to provide distinct thermal histories in twelve built walls. Mechanical properties were obtained from miniature tensile samples cut from various locations within each wall. The work identified two critical temperature ranges associated with microstructure evolution and demonstrated the capability to predict properties based on time spent in the two ranges, paving the way for future process control.",

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author = "Jennifer Bennett and Jennifer Glerum and Jian Cao",

note = "Publisher Copyright: {\textcopyright} 2021 CIRP",

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AU - Cao, Jian

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AB - This study examines the relationship between thermal histories obtained via IR imagery and final local mechanical properties in Inconel 718 walls built via directed energy deposition. Four processing conditions were designed to provide distinct thermal histories in twelve built walls. Mechanical properties were obtained from miniature tensile samples cut from various locations within each wall. The work identified two critical temperature ranges associated with microstructure evolution and demonstrated the capability to predict properties based on time spent in the two ranges, paving the way for future process control.

KW - Additive manufacturing

KW - Tensile strength

KW - Thermal effects

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Relating additively manufactured part tensile properties to thermal metrics

Abstract

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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