In Situ Observation of Coupled Growth Morphologies in Organic Peritectics Under Pure Diffusion Conditions
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TMS 2022 151st Annual Meeting & Exhibition Supplemental Proceedings. 2022.
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - In Situ Observation of Coupled Growth Morphologies in Organic Peritectics Under Pure Diffusion Conditions
AU - Mogeritsch, Johann Peter
AU - Sillekens, Wim
AU - Ludwig, Andreas
N1 - © 2022, The Minerals, Metals & Materials Society
PY - 2022
Y1 - 2022
N2 - Isothermally coupled peritectic solidification for a hyper-peritectic alloy under pure diffusive conditions is presented. For this purpose, directional solidification experiments were performed aboard the International Space Station using a model system for peritectic layer solidification patterns. At constant temperature gradient of 3.0 K/mm and for pulling velocities ranging from 0.12 μm/s to 0.09 μm/s, coupled peritectic growth was observed. At lower pulling velocities, contrary to expectations, only a planar solidification front of the pro-peritectic phase was detected. Two effects were noticed: a significant effect of the pro- peritectic interface on the capability of the peritectic phase to nucleate and, in the further course of theexperiments, a dynamic change of the coupled peritectic growth microstructure.
AB - Isothermally coupled peritectic solidification for a hyper-peritectic alloy under pure diffusive conditions is presented. For this purpose, directional solidification experiments were performed aboard the International Space Station using a model system for peritectic layer solidification patterns. At constant temperature gradient of 3.0 K/mm and for pulling velocities ranging from 0.12 μm/s to 0.09 μm/s, coupled peritectic growth was observed. At lower pulling velocities, contrary to expectations, only a planar solidification front of the pro-peritectic phase was detected. Two effects were noticed: a significant effect of the pro- peritectic interface on the capability of the peritectic phase to nucleate and, in the further course of theexperiments, a dynamic change of the coupled peritectic growth microstructure.
KW - Peritectic solidification
KW - International space station
KW - Microgravity
KW - TRIS-NPG
U2 - 10.1007/978-3-030-92381-5_136
DO - 10.1007/978-3-030-92381-5_136
M3 - Conference contribution
BT - TMS 2022 151st Annual Meeting & Exhibition Supplemental Proceedings
ER -
