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A physics-based flow stress model for cutting simulation of additively manufactured Alloy 718

Malakizadi, Amir and M'Saoubi, Rachid LU (2025) In CIRP Annals 74(1). p.113-117
Abstract

A dislocation-based flow stress model is proposed to describe the behavior of Alloy 718 fabricated using laser-based and electron-beam powder bed fusion methods. This physics-based model is adaptive to microstructural variations including the size and volume fraction of γ″ precipitates, crystallographic texture, grain size and the density of immobile dislocations. Coupled with data from thermodynamic and kinetic simulations, as well as insights from advanced characterization methods, this model provides a framework for assessing machinability of additively manufactured Alloy 718. The predicted cutting forces and chip shape parameters showed a good agreement with the corresponding measurements.

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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Additive manufacturing, Cutting, Modeling
in
CIRP Annals
volume
74
issue
1
pages
5 pages
publisher
Elsevier
external identifiers
  • scopus:105004803441
ISSN
0007-8506
DOI
10.1016/j.cirp.2025.04.024
language
English
LU publication?
yes
id
686fa27b-00e4-4a1b-87b5-40ba176cdf74
date added to LUP
2025-09-16 10:21:44
date last changed
2025-10-14 13:53:42
@article{686fa27b-00e4-4a1b-87b5-40ba176cdf74,
  abstract     = {{<p>A dislocation-based flow stress model is proposed to describe the behavior of Alloy 718 fabricated using laser-based and electron-beam powder bed fusion methods. This physics-based model is adaptive to microstructural variations including the size and volume fraction of γ<sup>″</sup> precipitates, crystallographic texture, grain size and the density of immobile dislocations. Coupled with data from thermodynamic and kinetic simulations, as well as insights from advanced characterization methods, this model provides a framework for assessing machinability of additively manufactured Alloy 718. The predicted cutting forces and chip shape parameters showed a good agreement with the corresponding measurements.</p>}},
  author       = {{Malakizadi, Amir and M'Saoubi, Rachid}},
  issn         = {{0007-8506}},
  keywords     = {{Additive manufacturing; Cutting; Modeling}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{113--117}},
  publisher    = {{Elsevier}},
  series       = {{CIRP Annals}},
  title        = {{A physics-based flow stress model for cutting simulation of additively manufactured Alloy 718}},
  url          = {{http://dx.doi.org/10.1016/j.cirp.2025.04.024}},
  doi          = {{10.1016/j.cirp.2025.04.024}},
  volume       = {{74}},
  year         = {{2025}},
}