Texture control of 316L parts by modulation of the melt pool morphology in selective laser melting

By O. Andreau, I. Koutiri, P. Peyre, J. Penot, Nicolas Saintier, É. Pessard, T. De Terris, C. Dupuy, T. Baudin. Journal of Materials Processing Technology, 2019

371 citations recorded by the source corpus.

In this study, 316L parts were fabricated with the selective laser melting additive layer manufacturing process using unidirectional laser scan to control their texture. The melt pool shape, microstructure and texture of three different cubic samples were analyzed and quantified using optical microscopy and electron back-scattered diffraction. The samples scanned along the shielding gas flow direction were shown to exhibit shallow conduction melt pools together with a strong {110} Goss texture along the laser scanning direction. The sample prepared with a laser scan perpendicular to the gas flow direction had deeper melt pools, with a weaker {110} Goss texture in addition to a fiber texture parallel to the scanning direction. Correlations were proposed between the melt-pool geometry and overlap and the resulting texture. The decrease of the melt pool depth was assumed to be linked to local attenuation of the laser beam effective power density transmitted to the powder bed.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/a6755d1db5b9a9541a7300220b7a5cfdb0f9d1d8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Automotive Engineering

1. Han Huang
2. P. Peyre

In Mechanical Engineering

1. I. Koutiri
2. Han Huang
3. Mingxing Zhang
4. P. Peyre
5. P. Kelly

Citations in the corpus

• Optimization and comparison of porosity rate measurement methods of Selective Laser Melted metallic parts (2019, background): “The interaction between this vapor plume (generated above the impact zone) and the laser can lead to the formation of porosities [18].”
• A Novel Strategy to Additively Manufacture 7075 Aluminium Alloy With Selective Laser Melting (2021, result): “The IPF colour indicates that majority of these columnar grains have a strong [001] texture along the BD, which is consistent with previous studies on other additively manufactured cubic-structured materials [43-46].”
• Mechanical anisotropy of additively manufactured stainless steel 316L: An experimental and numerical study (2021, result): “Moreover, the comparison between the crystallographic texture extracted from the Tower 90◦ and the wall, both from side and cross-section, show a three times random {110} texture in the build direction, which is in line with the findings in other studies [13,30,71].”