Prediction of lack-of-fusion porosity for powder bed fusion

By M. Tang, P. Pistorius, Jack L. Beuth. 2017

622 citations recorded by the source corpus.

Subfields: Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/defb6468ca28791659cd7078176ace1b30d34677

How researchers see this paper

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In Mechanical Engineering

1. T. Mukherjee
2. A. du Plessis
3. T. DebRoy
4. I. Yadroitsava
5. I. Yadroitsev
6. I. Koutiri
7. P. Peyre
8. H. Wei

Citations in the corpus

• Mitigation of lack of fusion defects in powder bed fusion additive manufacturing (2018, methodology): “7 shows that the experimentally measured [5,15,28,13] lack of fusion void fraction (VE) for three commonly used alloys follows a linear relationship with corresponding LF , which is estimated using Eq.”
• Influence of SLM process parameters on the surface finish, porosity rate and fatigue behavior of as-built Inconel 625 parts (2017, background): “(Tang et al., 2017) has summarized di ff erent values of porosity rate for di ff erent material, which are comprised between 0.8 and 3%, in order to propose a geometry based simulation to predict porosity caused by insu ffi cent overlap of melt pools in powder bed fusion.”
• X-Ray Microcomputed Tomography in Additive Manufacturing: A Review of the Current Technology and Applications (2018, positive): “21,36 Denudation of the substrate 19,21 can lead to nonuniform geometrical characteristics of consecutive tracks—thus gaps between tracks can exist at certain hatch distances.”
• Optimization and comparison of porosity rate measurement methods of Selective Laser Melted metallic parts (2019, background): “The increase in porosity rate observed at high VED, and assumed to be due to the destabilization of the key-hole welding mode is in full agreement with a recent simulation work by Tang [35].”
• Effects of process parameters on porosity in laser powder bed fusion revealed by X-ray tomography (2019, background): “Lack of fusion pores occur when the energy density is too low (low power or high speed), causing insufficient fusion of material and which results in irregular pores with varying sizes and with sharper edges and flattened shape, and sometimes containing entrapped unmelted particles [25].”