Habib SAHLAOUI

@ensit.tn

Mechanical Engineering - National Higher Engineering School of Tunis (ENSIT)
University of Tunis (UT) - Ministry of Higher Education - Tunisia

https://researchid.co/sahlaoui

RESEARCH INTERESTS

Microstructure evolution; Aging Material; Relationship microstructure-mechanical properties; Corrosion; Modeling; Nanocomposite; Additive manufacturing.

Scopus Publications

501

Scholar Citations

Scholar h-index

Scholar i10-index

Scopus Publications

Prediction of Cr, Ni and Fe Concentration Evolution During Aging of AISI 316L and Evaluation of σ-Phase Precipitation Criteria Reliability
Atef Chokri, Habib Sahlaoui, and Amir Ben Rhouma
Springer Science and Business Media LLC

A comparative study on microstructure and mechanical properties of 17-4PH processed by a laser powder bed fusion vs rolling process
Thabet A. M. Sghaier, Habib Sahlaoui, Tarek Mabrouki, Haifa Sallem, and Joël Rech
Springer Science and Business Media LLC
AbstractThis study provides a comprehensive benchmark comparison of microstructure, mechanical properties, and their evolution during subsequent heat treatment of 17-4PH Martensitic stainless steel (MSS) processed by laser powder bed fusion (LPBF) and its commercially rolled counterparts. The results reveal that LPBF samples exhibit a finer martensitic microstructure with presence of structural defects, pores, and some non-metallic inclusions randomly distributed at the grain boundaries and within the grains and an almost absence of austenite, compared to rolled samples. Additionally, after identical heat treatment, LPBF samples maintain a relatively unchanged microstructure while aging of rolled samples leads to a reduction in martensite in favor of austenite and Cu- and Si-rich precipitates. The LPBF samples demonstrate slightly elevated hardness (HV0.5 + 20%), mechanical strength (UTS + 15%) compared to rolled ones. Nevertheless, LPBF samples display a distinct behavior, characterized by abrupt fracture and reduced elongation at failure (El% max. 4% vs. 17.5%). Specifically, failure in LPBF samples is attributed to cleavage and cavities’ coalescence contrasting with the progressive failure mechanism observed in rolling ones driven by plasticity and damage evolution. Furthermore, the impact resistance of LPBF samples is notably weak (K max. 12.5 J/cm2 vs. 155 J/cm2), which is likely caused by macro- and microstructural defects generated by the LPBF process and the nucleation of harmful precipitates. The study proposes that the ductility of LPBF samples could be improved by implementing appropriate heat treatment and reducing defects through parameter optimization and by specific thermal cycle control during the LPBF process.

Evaluation of Passivation and Corrosion Behavior of AISI 316L SS with Low Ferrite Content Using EIS Test in Artificial Seawater Solution
Atef Chokri, Amir Ben Rhouma, and Habib Sahlaoui
Springer Nature Switzerland

Mechanical Properties of Additively Manufactured 17-4PH SS: Heat Treatment
Thabet A. M. Sghaier, Habib Sahlaoui, Tarek Mabrouki, Haifa Sallem, and Joël Rech
Springer Nature Switzerland

Experimental Study of Morphological Defects Generated by SLM on 17-4PH Stainless Steel
Thabet A. M. Sghaier, Habib Sahlaoui, Haifa Sallem, Tarek Mabrouki, and Joël Rech
Springer Nature Switzerland

Preface

Selective Laser Melting of Stainless-Steel: A Review of Process, Microstructure, Mechanical Properties and Post-Processing treatments
Thabet A. M. Sghaier, Habib Sahlaoui, Tarek Mabrouki, Haifa Sallem, and Joël Rech
Springer Science and Business Media LLC

Effect of uncertainty parameters on graphene sheets Young's modulus prediction
Habib Sahlaoui, Mohamed Guedri, and Habib Sidhom
Springer Science and Business Media LLC

Experimental investigation and analytical prediction of σ-phase precipitation in AISI 316L austenitic stainless steel
Habib Sahlaoui and Habib Sidhom
Springer Science and Business Media LLC

Comparative study of the thermal shock resistance of an industrial tableware porcelain
Habib Sahlaoui, Kamel Makhlouf, and Habib Sidhom
Hindawi Limited
The effect of the glazed layer and firing conditions (temperature and duration) on the thermal shocks behavior of tableware porcelains has been studied. Two types of glazed layers and three firing conditions, used industrially in the commercial porcelains manufacture, are used in this investigation. Repeated thermal shock tests showed that the glazed layer with higher alumina/silica ratio is more resistant to thermal shocks and that the slow firing cycle, even at a relatively low temperature, is very beneficial for the thermal shock resistance of the porcelain matrix. Three-point bending tests showed that the crazing phenomenon, which affects the glazed layers as well as the porcelain matrix, does not affect significantly the mechanical resistance of these materials.

Quantitative evaluation of aged AISI 316L stainless steel sensitization to intergranular corrosion: Comparison between microstructural electrochemical and analytical methods
H. Sidhom, T. Amadou, H. Sahlaoui, and C. Braham
Springer Science and Business Media LLC

Effects of ageing conditions on the precipitates evolution, chromium depletion and intergranular corrosion susceptibility of AISI 316L: Experimental and modeling results
H Sahlaoui, K Makhlouf, H Sidhom, and J Philibert
Elsevier BV

A predictive model of the evolution of chromium profiles during the ageing of Ni-Cr-Fe alloys
H Sahlaoui
Elsevier BV

Prediction of chromium depleted-zone evolution during aging of Ni-Cr-Fe alloys
H Sahlaoui, H Sidhom, and J Philibert
Elsevier BV

Improvement of mechanical and thermal properties of glass structures by a metallic oxide addition and suitable heat treatments
H Sahlaoui
Elsevier BV

RECENT SCHOLAR PUBLICATIONS

Prediction of Cr, Ni and Fe Concentration Evolution During Aging of AISI 316L and Evaluation of -Phase Precipitation Criteria Reliability
A Chokri, H Sahlaoui, A Ben Rhouma
Transactions of the Indian Institute of Metals 78 (2), 52 2025

A comparative study on microstructure and mechanical properties of 17-4PH processed by a laser powder bed fusion vs rolling process
TAM Sghaier, H Sahlaoui, T Mabrouki, H Sallem, J Rech
Progress in Additive Manufacturing, 1-17 2024

Content Using EIS Test in Artificial Seawater
A Chokri, AB Rhouma, H Sahlaoui
Design and Modeling of Mechanical Systems-VI: Proceedings of the 10th 2024

Evaluation of Passivation and Corrosion Behavior of AISI 316L SS with Low Ferrite Content Using EIS Test in Artificial Seawater Solution
A Chokri, A Ben Rhouma, H Sahlaoui
International Conference Design and Modeling of Mechanical Systems, 19-28 2023

Advances in Additive Manufacturing: Materials, Processes and Applications: Selected Contributions to the 2nd Advances in Additive Manufacturing Conference (AIAM'2023), May 18
T Mabrouki, H Sahlaoui, H Sallem, F Ghanem, N Benyahya
Springer Nature 2023

Selective laser melting of stainless-steel: a review of process, microstructure, mechanical properties and post-processing treatments
TAM Sghaier, H Sahlaoui, T Mabrouki, H Sallem, J Rech
International Journal of Material Forming 16 (4), 41 2023

Mechanical properties of additively manufactured 17-4PH SS: heat treatment
TAM Sghaier, H Sahlaoui, T Mabrouki, H Sallem, J Rech
Advances In Additive Manufacturing Conference, 28-36 2023

Experimental Study of Morphological Defects Generated by SLM on 17-4PH Stainless Steel
TAM Sghaier, H Sahlaoui, H Sallem, T Mabrouki, J Rech
Advances In Additive Manufacturing Conference, 238-244 2023

Effect of uncertainty parameters on graphene sheets Young’s modulus prediction
H Sahlaoui, M Guedri, H Sidhom
Journal of Mechanical Science and Technology 27, 2769-2774 2013

Experimental Investigation and Analytical Prediction of σ-Phase Precipitation in AISI 316L Austenitic Stainless Steel
H Sahlaoui, H Sidhom
Metallurgical and Materials Transactions A 44, 3077-3083 2013

Comparative study of the thermal shock resistance of an industrial tableware porcelain
H Sahlaoui, K Makhlouf, H Sidhom
Journal of Engineering 2013 (1), 972019 2013

Quantitative evaluation of aged AISI 316L stainless steel sensitization to intergranular corrosion: comparison between microstructural electrochemical and analytical methods
H Sidhom, T Amadou, H Sahlaoui, C Braham
Metallurgical and Materials Transactions A 38 (6), 1269-1280 2007

Effects of ageing conditions on the precipitates evolution, chromium depletion and intergranular corrosion susceptibility of AISI 316L: experimental and modeling results
H Sahlaoui, K Makhlouf, H Sidhom, J Philibert
Materials Science and Engineering: A 372 (1-2), 98-108 2004

A predictive model of the evolution of chromium profiles during the ageing of Ni-Cr-Fe alloys.
H Sahlaoui, H Sidhom, J Philibert
Annales de Chimie, Science des Materiaux 28 (5), 1-16 2003

Prediction of chromium depleted-zone evolution during aging of Ni–Cr–Fe alloys
H Sahlaoui, H Sidhom, J Philibert
Acta Materialia 50 (6), 1383-1392 2002

Amlioration des comportements thermique et mcanique des structures vitreuses par addition d'oxyde mtallique et traitements thermiques
H Sahlaoui, H Sidhom
Annales de Chimie Science des Matriaux 26 (3), 55-66 2001

Solid Inorganic Compounds-Improvement of mechanical and thermal properties of glass structures by a metallic oxide addition and suitable heat treatments.
H Sahlaoui, H Sidhom
Annales de Chimie-Science des Materiaux 26 (3), 55-66 2001

Advances in Additive Manufacturing: Materials, Processes and Applications
T Mabrouki, H Sahlaoui, H Sallem, F Ghanem, N Benyahya

MOST CITED SCHOLAR PUBLICATIONS

Prediction of chromium depleted-zone evolution during aging of Ni–Cr–Fe alloys
H Sahlaoui, H Sidhom, J Philibert
Acta Materialia 50 (6), 1383-1392 2002
Citations: 146

Effect of uncertainty parameters on graphene sheets Young’s modulus prediction
H Sahlaoui, M Guedri, H Sidhom
Journal of Mechanical Science and Technology 27, 2769-2774 2013
Citations: 5

Comparative study of the thermal shock resistance of an industrial tableware porcelain
H Sahlaoui, K Makhlouf, H Sidhom
Journal of Engineering 2013 (1), 972019 2013
Citations: 2

Mechanical properties of additively manufactured 17-4PH SS: heat treatment
TAM Sghaier, H Sahlaoui, T Mabrouki, H Sallem, J Rech
Advances In Additive Manufacturing Conference, 28-36 2023
Citations: 1

A predictive model of the evolution of chromium profiles during the ageing of Ni-Cr-Fe alloys.
H Sahlaoui, H Sidhom, J Philibert
Annales de Chimie, Science des Materiaux 28 (5), 1-16 2003
Citations: 1