Laser Powder Bed Fusion (LPBF) of In718 and the Impact of Pre-Heating at 500 and 1000 degrees C: Operando Study


Ur Rehman A., Pitir F., SALAMCİ M. U.

MATERIALS, vol.14, no.21, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 21
  • Publication Date: 2021
  • Doi Number: 10.3390/ma14216683
  • Journal Name: MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, CAB Abstracts, Communication Abstracts, Compendex, INSPEC, Metadex, Veterinary Science Database, Directory of Open Access Journals, Civil Engineering Abstracts
  • Keywords: multiphysics, laser powder bed fusion, LPBF, temperature dependent properties, pre-heating, superalloy, In718, ADDITIVE MANUFACTURING PHYSICS, IN-SITU CHARACTERIZATION, 316L STAINLESS-STEEL, MELTING SINGLE-TRACK, MOLTEN POOL, SOLIDIFICATION MICROSTRUCTURE, SINTERING/MELTING SLS/SLM, MECHANICAL-PROPERTIES, NUMERICAL-SIMULATION, METALLIC COMPONENTS
  • Gazi University Affiliated: Yes

Abstract

The morphology of a melt pool has a critical role in laser powder bed fusion (LPBF). Nevertheless, directly characterizing the melt pool during LPBF is incredibly hard. Here, we present the melt pool flow of the entire melt pool in 3D using mesoscopic simulation models. The physical processes occurring within the melt pool are pinpointed. The flow patterns throughout the same are exposed and measured. Moreover, the impact of pre-heating at 500 and 1000 & DEG;C has been described. The study findings offer insights into LPBF. The findings presented here are critical for comprehending the LPBF and directing the establishment of improved metrics for process parameters optimization.