# Review of “Plasticity and ductility of an anisotropic recrystallized AA2198 Al-Cu-Li alloy in T3 and T8 conditions during proportional and non-proportional loading paths: simulations and experiments”

Xiang Kong, Jianqiang Chen, Yazid Madi, Djamel Missoum-Benziane, Jacques Besson, Thilo F. Morgeneyer, Thomas Pardoen, L.S. Toth

► To cite this version:

Xiang Kong, Jianqiang Chen, Yazid Madi, Djamel Missoum-Benziane, Jacques Besson, et al. Review of “Plasticity and ductility of an anisotropic recrystallized AA2198 Al-Cu-Li alloy in T3 and T8 conditions during proportional and non-proportional loading paths: simulations and experiments”. 2022. [hal-03889903](https://hal.science/hal-03889903)

HAL Id: hal-03889903

https://hal.science/hal-03889903

Submitted on 1 Mar 2023

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Identifiers

Open Review
OAI hal-03889903
Reviewed Article
DOI 10.46298/jtcam.8913

History

Review 6 Feb, 2022
Rebuttal 23 Jun, 2022

Licence

CC BY 4.0
©The Authors

# Review of “Plasticity and ductility of an anisotropic recrystallized AA2198 Al-Cu-Li alloy in T3 and T8 conditions during proportional and non-proportional loading paths: simulations and experiments”

Xiang KONG<fnref n="1" />, Jianqiang CHEN<fnref n="1" />,<fnref n="2" />, Yazid MADI<fnref n="1" />, Djamel MISSOUM-BENZIANE<fnref n="1" />, Jacques BESSON<fnref n="1" />, Thilo F. MORGENEYER<fnref n="1" />, Thomas PARDOEN<fnref n="3" />,<fnref n="4" />, and Lazslo TOTH<fnref n="4" />,⁵

## Review of version 1

Permalink: hal-03497233v1

**Author** We thank the reviewer for his nice comments and suggestions.

### Reviewer 1 (Thomas PARDOEN)

**Reviewer** This study on the ductile fracture of the alloy Al AA2198 is at the forefront of the research in the field. It combines really original mechanical tests, the question related to non proportional loadings that is not sufficiently treated in literature, a modern alloy and well executed FE plasticity simulations and a robust identification strategy of plasticity parameters.

**Author** We thank the reviewer for his rewarding comment.

**Reviewer** My only comments that deserve a minor revision are the following:
The discussion would be strengthened by a figure providing the variation of accumulated equivalent plastic strain as a function of stress triaxiality for all tests on a single graph, with the final point being the true accumulated fracture strain. This would allow showing in a clear graphical way the impact of some of the non proportional loads more clearly than what is currently shown in the current version.

**Author** We have now added two figures that show the accumulated strain fields and that indicate the location at which the strain to fracture was determined in the simulation. The second figure shows the strain as a function of stress triaxiality for the entire loading history for the T3 and T8 materials. The results are commented in this section.

**Reviewer** Although the list of references has many relevant papers, it misses some key papers in the field that could be also used in the introduction and discussion. I'm thinking for instance of a paper by A. Benzerga on non radial loading (using void cell simulations) which very well makes the point on the effect (here related to void shape effects).

**Author** We have now added this reference.

<footnote n="1">¹ MINES Paris, PSL University, Centre des Matériaux, CNRS UMR 7633, Evry, France</footnote>

<footnote n="2">² Pratt & Whitney Canada, 1000 Boul. Marie-Victorin, Longueuil, QC J4G 1A1 Canada</footnote>

<footnote n="3">³ Institute of Mechanics, Materials and Civil Engineering, UC Louvain, 1348 Louvain-la-Neuve, Belgium</footnote>

<footnote n="4">⁴ Physical Metallurgy Metal-forming and Nanotechnology Institute, University of Miskolc, Hungary</footnote>

<footnote>R Reviewer</footnote>

<footnote>E Editor</footnote>
**Reviewer** Please indicate and justify the number of elements chosen over the thickness in the FE models.

**Author** We made this change.

**Reviewer** there are several typos to correct :

ii: axisymmetric

vi: "in the fe software xx" change as "using the xxx"

several improper uses of past tense : ex. ix-line 4 "was" must become "is", xv "it showed" must become "It shows"

xii: "results for last strain field" add a "the"

xiv: "more close" - "closer"

xix: "Deschamps found a Bauschinger test" ???

xix: "reduction on ductility" prefer "of"

xix: "identified in in situ" prefer "from"

**Author** We made all the changes.

## Editor's assessment (Lazslo Toth)

This manuscript went through the review process very smoothly: both Reviewers proposed to accept it. The first Referee was asking for minor modifications: he proposed to add a figure in order to have more information on the variation of the accumulated equivalent plastic strain as a function of stress triaxiality. Then the Authors added two figures. One shows the accumulated strain fields and indicates the location at which the strain to fracture was determined in the simulation. The second figure shows the strain as a function of stress triaxiality for the entire loading history for the T3 and T8 materials. These results were also commented in the revised version. The second Referee was perfectly satisfied with the quality of the work and proposed to accept the paper as it was.

**Open Access** This review is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the authors—the copyright holder. To view a copy of this license, visit creativecommons.org/licenses/by/4.0.

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