**About this Abstract** |

**Meeting** |
**2017 TMS Annual Meeting & Exhibition
** |

**Symposium
** |
**Computational Thermodynamics and Kinetics
** |

**Presentation Title** |
The Effects of Quantum Dynamics of Atomic Motion on Dislocation Mobility |

**Author(s)** |
Rodrigo Freitas, Mark Asta, Vasily Bulatov |

**On-Site Speaker (Planned)** |
Rodrigo Freitas |

**Abstract Scope** |
Recent studies suggested that zero-point vibrations should have important effects on dislocation motion even in heavy refractory metals, explaining long standing discrepancies between experimental estimates and theoretical predictions of the Peierls stress of body-centered cubic crystals at low temperatures. Here we employ Path-Integral Molecular Dynamics to examine the effects of the quantum dynamics of atomic motion on the thermally activated motion of dislocations in α-iron. |

**Proceedings Inclusion?** |
Planned: Supplemental Proceedings volume |