# Dislocation assisted phase separation: a phase field study

Source: [Dislocation assisted phase separation: a phase field study](<https://www.sota2.com/research/paper/68fa3f781e209131ce8edc44>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T02:24:27.957Z

Authors: Arjun Varma R, Prita Pant, M P Gururajan

Published: 2021-07-27T10:01:30.000Z

## Abstract

Defects play a key role in deciding the mechanisms and kinetics of phase transformations. In this paper, we show how dislocations influence phase separation in alloys with miscibility gap. Specifically, depending on the ratio of pipe mobility to bulk mobility, it is seen that even in a system with nominal compositions outside the spinodal limit, spinodal phase separation is possible. Surprisingly, phase separation through both nucleation and growth, and spinodal decomposition, is seen concurrently (for the case of intersecting dislocations). Finally, the prominent role played by dislocations in influencing the morphology of precipitates is explored. We show that these results agree qualitatively with recent experimental results in iron based systems obtained using Atom Probe Tomography (APT).

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2107.12703>)

[PDF](<https://arxiv.org/pdf/2107.12703.pdf>)