The three-dimensional morphology of growing dendrites
- Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering.
- Purdue Univ., West Lafayette, IN (United States). Dept. of Electrical and Computer Engineering.
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Carnegie Mellon University, Pittsburgh, PA (United States). Dept. of Materials Science and Engineering.
The processes controlling the morphology of dendrites have been of great interest to a wide range of communities, since they are examples of an out-of-equilibrium pattern forming system, there is a clear connection with battery failure processes, and their morphology sets the properties of many metallic alloys. We determine the three-dimensional morphology of free growing metallic dendrites using a novel X-ray tomographic technique that improves the temporal resolution by more than an order of magnitude compared to conventional techniques. These measurements show that the growth morphology of metallic dendrites is surprisingly different from that seen in model systems, the morphology is not self-similar with distance back from the tip, and that this morphology can have an unexpectedly strong influence on solute segregation in castings. As a result, these experiments also provide benchmark data that can be used to validate simulations of free dendritic growth.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Ames Laboratory (AMES), Ames, IA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357; FC52-08NA28752; AC52-06NA25396
- OSTI ID:
- 1214789
- Alternate ID(s):
- OSTI ID: 1214814; OSTI ID: 1235931
- Report Number(s):
- LA-UR-15-22761; srep11824
- Journal Information:
- Scientific Reports, Vol. 5, Issue C; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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