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

Materials

Metin Uymaz Salamci¹  Asif Ur Rehman²  Fatih Pitir² 

[1] Department of Mechanical Engineering, Gazi University, Ankara 06570, Turkey;ERMAKSAN, Bursa 16065, Turkey;

关键词: multiphysics;    laser powder bed fusion;    LPBF;    temperature dependent properties;    pre-heating;    superalloy;   

DOI  :  10.3390/ma14216683

来源: DOAJ

【 摘 要 】

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 °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.

【 授权许可】

Unknown