000015259 001__ 15259
000015259 005__ 20250107133956.0
000015259 022__ $$a2363-9512
000015259 0247_ $$2DOI$$a10.1007/s40964-024-00837-0
000015259 037__ $$aARTICLE
000015259 039_9 $$a2025-01-07 13:39:56$$b0$$c2025-01-07 10:11:26$$d1001044$$c2025-01-06 16:26:50$$d0$$y2025-01-06 16:26:42$$z1000099
000015259 041__ $$aeng
000015259 245__ $$aA comparative study on microstructure and mechanical properties of 17-4PH processed by a laser powder bed fusion vs rolling process
000015259 260__ $$aBerlin, Germany$$bSpringer Nature
000015259 269__ $$a2024-10
000015259 300__ $$a17 p.
000015259 506__ $$avisible
000015259 520__ $$9eng$$aThis study provides a comprehensive benchmark comparison of microstructure, mechanical properties, and their evolution during subsequent heat treatment of 17-4PH Martensitic stainless steel (MSS) processed by laser powder bed fusion (LPBF) and its commercially rolled counterparts. The results reveal that LPBF samples exhibit a finer martensitic microstructure with presence of structural defects, pores, and some non-metallic inclusions randomly distributed at the grain boundaries and within the grains and an almost absence of austenite, compared to rolled samples. Additionally, after identical heat treatment, LPBF samples maintain a relatively unchanged microstructure while aging of rolled samples leads to a reduction in martensite in favor of austenite and Cu- and Si-rich precipitates. The LPBF samples demonstrate slightly elevated hardness (HV0.5 + 20%), mechanical strength (UTS + 15%) compared to rolled ones. Nevertheless, LPBF samples display a distinct behavior, characterized by abrupt fracture and reduced elongation at failure (El% max. 4% vs. 17.5%). Specifically, failure in LPBF samples is attributed to cleavage and cavities’ coalescence contrasting with the progressive failure mechanism observed in rolling ones driven by plasticity and damage evolution. Furthermore, the impact resistance of LPBF samples is notably weak (K max. 12.5 J/cm2 vs. 155 J/cm2), which is likely caused by macro- and microstructural defects generated by the LPBF process and the nucleation of harmful precipitates. The study proposes that the ductility of LPBF samples could be improved by implementing appropriate heat treatment and reducing defects through parameter optimization and by specific thermal cycle control during the LPBF process.
000015259 540__ $$acorrect
000015259 592__ $$aHEI-VS
000015259 592__ $$bInstitut Systèmes industriels
000015259 592__ $$cIngénierie et Architecture
000015259 6531_ $$9eng$$a17-4PH martensitic stainless steel
000015259 6531_ $$9eng$$alaser powder fed fusion
000015259 6531_ $$9eng$$arolling
000015259 6531_ $$9eng$$amicrostructure
000015259 6531_ $$9eng$$amechanical properties
000015259 6531_ $$9eng$$aheat treatment
000015259 655__ $$ascientifique
000015259 700__ $$aSghaier, Thabet A. M.$$uUniversity of Tunis (UT), Bab Menara, Tunis, Tunisia
000015259 700__ $$aSahlaoui, Habib$$uUniversity of Tunis (UT), Bab Menara, Tunis, Tunisia
000015259 700__ $$aMabrouki, Tarek$$uUniversity of Tunis El Manar, Le Belvedere, Tunis, Tunisia
000015259 700__ $$aSallem, Haifa$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015259 700__ $$aRech, Joël$$uLaboratoire de Tribologie et Dynamique des Système, ECL-ENISE, Saint-Etienne, France
000015259 773__ $$tProgress in Additive Manufacturing$$j2024
000015259 8564_ $$uhttps://arodes.hes-so.ch/record/15259/files/Sallem_2024_comparative_study_microstructure_mechanical_properties_17-4PH_processed_laser_powder_bed_fusion_rolling_process.pdf$$yPublished version$$91f944a51-d3cd-496c-a64c-ba7a4b6f0c64$$s5222348
000015259 906__ $$aGOLD
000015259 909CO $$ooai:hesso.tind.io:15259$$pGLOBAL_SET
000015259 950__ $$aaucun
000015259 980__ $$ascientifique
000015259 981__ $$ascientifique