Development of Laser Powder Bed Fusion Processing Parameters for Aermet 100 Powder

Jelis, Elias; Hespos, Michael R.; Feurer, Matthew E.; Groeschler, Shana

doi:10.1007/s11665-022-07638-y

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…Jelis et al studied the use of a stress relief, and two separate heat treatments. The effort found a reduction in the UTS for all three treatments but an overall increase in YS ranging from ~200 to 600 MPa [33]. In regard to the strength of the materials deposited by the two processes in the present study, the AFSD material displayed a slightly higher average UTS than that of the L-DED.…”

Section: Resultsmentioning

confidence: 43%

Dynamic Tensile Behavior of Laser-Directed Energy Deposition and Additive Friction Stir-Deposited AerMet 100

McClelland,

Petersen,

Dunsford

2023

Metals

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Quasi-static and high-rate tensile experiments were used to examine the strain rate sensitivity of laser-directed energy deposition (L-DED)- and additive friction stir deposition (AFSD)-formed AerMet 100 ultrahigh-strength steel-additive manufactured builds. Electron backscattered diffraction (EBSD) revealed similar as-deposited grain sizes between the two AM processes at approximately 24 μm and 17 μm for the L-DED and AFSD samples, respectively. The strain hardening rate, θ, revealed little change in the overall hardening observed in the L-DED and AFSD materials, with a consistent hardening in the quasi-static samples and three identifiable regions in that of the high-rate tested materials. The L-DED deposited materials displayed average ultimate tensile strength values of 1835 and 2902 MPa for the 0.001 s−1 and 2500 s−1 strain rates, respectively and the AFSD deposited materials displayed ultimate tensile strength values of 1928 and 3080 MPa for the 0.001 s−1 and 2500 s−1 strain rates, respectively. Overall, the strength for both processes displayed a positive strain rate sensitivity, with increases in strength of ~1000 MPa for both processes. Fractography revealed significant solidification voids in the laser DED material and poor layer adhesion in the AFSD material.

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Section: Resultsmentioning

confidence: 43%

Dynamic Tensile Behavior of Laser-Directed Energy Deposition and Additive Friction Stir-Deposited AerMet 100

McClelland,

Petersen,

Dunsford

2023

Metals

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show abstract

Numerical Model for Simulation of Melting and Microstructure Evolution during a Multi-layered Laser Melting Process

Swain

Jegatheesan

Jakhar

et al. 2023

J. of Materi Eng and Perform

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Dynamic tensile behavior of laser-directed energy deposition and additive friction stir-deposited AerMet 100

McClelland,

Peterson,

Dunsford

2024

View full text Add to dashboard Cite

Quasi-static and high-rate tensile experiments were used to examine the strain rate sensitivity of laser-directed energy deposition (L-DED)- and additive friction stir deposition (AFSD)-formed AerMet 100 ultrahigh-strength steel-additive manufactured builds. Electron backscattered diffraction (EBSD) revealed similar as-deposited grain sizes between the two AM processes at approximately 24 μm and 17 μm for the L-DED and AFSD samples, respectively. The strain hardening rate, θ, revealed little change in the overall hardening observed in the L-DED and AFSD materials, with a consistent hardening in the quasi-static samples and three identifiable regions in that of the high-rate tested materials. The LDED deposited materials displayed average ultimate tensile strength values of 1835 and 2902 MPa for the 0.001 s−1 and 2500 s−1 strain rates, respectively and the AFSD deposited materials displayed ultimate tensile strength values of 1928 and 3080 MPa for the 0.001 s−1 and 2500 s−1 strain rates, respectively. Overall, the strength for both processes displayed a positive strain rate sensitivity, with increases in strength of ~1000 MPa for both processes. Fractography revealed significant solidification voids in the laser DED material and poor layer adhesion in the AFSD material.

show abstract

Development of Laser Powder Bed Fusion Processing Parameters for Aermet 100 Powder

Cited by 3 publications

References 11 publications

Dynamic Tensile Behavior of Laser-Directed Energy Deposition and Additive Friction Stir-Deposited AerMet 100

Dynamic Tensile Behavior of Laser-Directed Energy Deposition and Additive Friction Stir-Deposited AerMet 100

Numerical Model for Simulation of Melting and Microstructure Evolution during a Multi-layered Laser Melting Process

Dynamic tensile behavior of laser-directed energy deposition and additive friction stir-deposited AerMet 100

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