Volumetric energy density impact on mechanical properties of additively manufactured 718 Ni alloy

Benjamin Stegman; Anyu Shang; Luke Hoppenrath; Anant Raj; Hany Abdel-Khalik; John Sutherland; David Schick; Victor Morgan; Kirti Jackson; Xinghang Zhang

doi:10.1016/j.msea.2022.143699

Volumetric energy density impact on mechanical properties of additively manufactured 718 Ni alloy

Benjamin Stegman
, Anyu Shang
, Luke Hoppenrath
, Anant Raj
, Hany Abdel-Khalik
, John Sutherland
, David Schick
, Victor Morgan
, Kirti Jackson
, Xinghang Zhang

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

25 Scopus citations

Abstract

The 718 Ni-based superalloy has gained enormous attention in the additive manufacturing community for its great weldability, allowing for complex geometries to be formed, and its superb mechanical strength. Here we explore the influence of a wide range of major build parameters on microstructures and mechanical properties of 718 Ni alloys. Volumetric energy density appears to be one of the major parameters that captures the relationship between energy input and measured mechanical properties and microstructures of the alloys. A threshold energy density was identified below which the properties of the additively manufactured specimen degrade substantially. The influence of energy density on the quality of the built specimen simulated using Flow3D AM correlates well with the experimental results.

Original language	English
Article number	143699
Journal	Materials Science and Engineering: A
Volume	854
DOIs	https://doi.org/10.1016/j.msea.2022.143699
State	Published - Sep 27 2022
Externally published	Yes

Funding

Stegman and Zhang would like to acknowledge the partial financial support from the DOE Nuclear Energy University Program (NEUP) under grant number DE-NE0008990. We acknowledge Proto Precision Additive LLC for providing the tensile coupons and their knowledgeable expertise in the field of LPBF. We also acknowledge access to the microscopy center in the School of Materials Engineering and Life science microscopy facility at Purdue University. Stegman and Zhang would like to acknowledge the partial financial support from the DOE Nuclear Energy University Program (NEUP) under grant number DE-NE0008990 . We acknowledge Proto Precision Additive LLC for providing the tensile coupons and their knowledgeable expertise in the field of LPBF. We also acknowledge access to the microscopy center in the School of Materials Engineering and Life science microscopy facility at Purdue University.

Keywords

Additive manufacturing
Electron microscopy
Energy density
Interfaces
Mechanical properties
Nickel alloys

Access to Document

10.1016/j.msea.2022.143699

Cite this

@article{714cd214cef74c47951b5c77adcbb416,

title = "Volumetric energy density impact on mechanical properties of additively manufactured 718 Ni alloy",

abstract = "The 718 Ni-based superalloy has gained enormous attention in the additive manufacturing community for its great weldability, allowing for complex geometries to be formed, and its superb mechanical strength. Here we explore the influence of a wide range of major build parameters on microstructures and mechanical properties of 718 Ni alloys. Volumetric energy density appears to be one of the major parameters that captures the relationship between energy input and measured mechanical properties and microstructures of the alloys. A threshold energy density was identified below which the properties of the additively manufactured specimen degrade substantially. The influence of energy density on the quality of the built specimen simulated using Flow3D AM correlates well with the experimental results.",

keywords = "Additive manufacturing, Electron microscopy, Energy density, Interfaces, Mechanical properties, Nickel alloys",

author = "Benjamin Stegman and Anyu Shang and Luke Hoppenrath and Anant Raj and Hany Abdel-Khalik and John Sutherland and David Schick and Victor Morgan and Kirti Jackson and Xinghang Zhang",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = sep,

day = "27",

doi = "10.1016/j.msea.2022.143699",

language = "English",

volume = "854",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier",

}

TY - JOUR

T1 - Volumetric energy density impact on mechanical properties of additively manufactured 718 Ni alloy

AU - Stegman, Benjamin

AU - Shang, Anyu

AU - Hoppenrath, Luke

AU - Raj, Anant

AU - Abdel-Khalik, Hany

AU - Sutherland, John

AU - Schick, David

AU - Morgan, Victor

AU - Jackson, Kirti

AU - Zhang, Xinghang

PY - 2022/9/27

Y1 - 2022/9/27

N2 - The 718 Ni-based superalloy has gained enormous attention in the additive manufacturing community for its great weldability, allowing for complex geometries to be formed, and its superb mechanical strength. Here we explore the influence of a wide range of major build parameters on microstructures and mechanical properties of 718 Ni alloys. Volumetric energy density appears to be one of the major parameters that captures the relationship between energy input and measured mechanical properties and microstructures of the alloys. A threshold energy density was identified below which the properties of the additively manufactured specimen degrade substantially. The influence of energy density on the quality of the built specimen simulated using Flow3D AM correlates well with the experimental results.

AB - The 718 Ni-based superalloy has gained enormous attention in the additive manufacturing community for its great weldability, allowing for complex geometries to be formed, and its superb mechanical strength. Here we explore the influence of a wide range of major build parameters on microstructures and mechanical properties of 718 Ni alloys. Volumetric energy density appears to be one of the major parameters that captures the relationship between energy input and measured mechanical properties and microstructures of the alloys. A threshold energy density was identified below which the properties of the additively manufactured specimen degrade substantially. The influence of energy density on the quality of the built specimen simulated using Flow3D AM correlates well with the experimental results.

KW - Additive manufacturing

KW - Electron microscopy

KW - Energy density

KW - Interfaces

KW - Mechanical properties

KW - Nickel alloys

UR - https://www.scopus.com/pages/publications/85136458645

U2 - 10.1016/j.msea.2022.143699

DO - 10.1016/j.msea.2022.143699

M3 - Article

AN - SCOPUS:85136458645

SN - 0921-5093

VL - 854

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 143699

ER -

Volumetric energy density impact on mechanical properties of additively manufactured 718 Ni alloy

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this