Controlling interdependent meso-nanosecond dynamics and defect generation in metal 3D printing
Abstract
Laser powder bed fusion is an additive manufacturing technique that laser-melts powder layer by layer to build a three-dimensional (3D) part. Khairallah et al. used experiments and a multiphysics model to determine the origin of the melt spatter and defect formation that degrade the properties of built parts (see the Perspective by Polonsky and Pollock). Informed modulation of laser power is important to avoid disturbing the powder bed and creating laser shadowing. This reduces pore formations and leads to more uniform properties of 3D-printed parts.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 08, 2020
- Source ID
- 10.1126/science.aay7830
Entities
People
- Aiden Martin
- Alexander M. Rubenchik
- Andrew T. Anderson
- Edwin J Schwalbach
- Gabe Guss
- Jonathan R.I. Lee
- Joshua Hammons
- Kevin Chaput
- Manyalibo J Matthews
- Megna N Shah
- Michael G Chapman
- Michael H Nielsen
- Nicholas P Calta
- Saad A Khairallah
- T M Willey
- Wayne E. King
- Y Morris Wang
Organizations
- Air Force Research Laboratory
- Argonne National Laboratory
- Lawrence Livermore National Laboratory
- National Nuclear Security Administration
- United States Department of Energy
- Washington State University