Controlling interdependent meso-nanosecond dynamics and defect generation in metal 3D printing
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- Saad A. Khairallah
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Aiden A. Martin
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Jonathan R. I. Lee
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Gabe Guss
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Nicholas P. Calta
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Joshua A. Hammons
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Michael H. Nielsen
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Kevin Chaput
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA.
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- Edwin Schwalbach
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA.
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- Megna N. Shah
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA.
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- Michael G. Chapman
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA.
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- Trevor M. Willey
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Alexander M. Rubenchik
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Andrew T. Anderson
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Y. Morris Wang
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Manyalibo J. Matthews
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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- Wayne E. King
- The Barnes Group Advisors, 415 Orchard St., Sewickley, PA 15143, USA.
抄録
<jats:title>Circumventing spatter</jats:title> <jats:p> Laser powder bed fusion is an additive manufacturing technique that laser-melts powder layer by layer to build a three-dimensional (3D) part. Khairallah <jats:italic>et al.</jats:italic> 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. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6491" page="660" related-article-type="in-this-issue" vol="368" xlink:href="10.1126/science.aay7830">660</jats:related-article> ; see also p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6491" page="583" related-article-type="in-this-issue" vol="368" xlink:href="10.1126/science.abb4938">583</jats:related-article> </jats:p>
収録刊行物
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- Science
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Science 368 (6491), 660-665, 2020-05-08
American Association for the Advancement of Science (AAAS)