Effect of the Convective Losses During Selective Laser Melting Process

EasyChair Preprint no. 5246

Abstract

This paper presents a numerical study aimed for understanding the effect of the convective losses during selective laser melting process. The initial powder distribution is obtained by discrete element method (DEM) calculation, while the temperature-velocity distributions are analyzed by ANSYS-FLUENT commercial code. Our study is developed in the mesoscale, and the main obtained results are for a laser power of 100 W and a scanning speed equal to 15 cm/s. It is shown that the convective losses is of important influence on the melting time of the powder as well as on the occurrence of the Marangoni convection. It was also noted that the values of the maximum temperature obtained when the pseudo stationary stage is reached are widely different in the two cases.

Keyphrases: _ Laser, — Additive manufacturing, — Melting and solidification, — Selective laser melting, — Stainless steel.

@Booklet{EasyChair:5246,
  author = {Samia Aggoune and Farida Hamadi and El-Hachemi Amara and Toufik Tamssaout and Karim Kheloufi and Kada Bougherara},
  title = {Effect of the Convective Losses During Selective Laser Melting Process},
  howpublished = {EasyChair Preprint no. 5246},

  year = {EasyChair, 2021}}