Cited by 2,629Fluid Dynamics and Thin FilmsThermodynamic and Structural Properties of Metals and AlloysSolidification and crystal growth phenomena

Theory of Thermal Grooving

Mullins, W. W.·1957·Journal of Applied Physics

Abstract

A theory is presented which describes the development of surface grooves at the grain boundaries of a heated polycrystal. The mechanisms of evaporation-condensation and surface diffusion are discussed with the use of the Gibbs-Thompson formula and the assumption that the properties of an interface do not depend on its orientation. For the idealized case in which only one of the mechanisms is operative, the groove profile is shown to have a time-independent shape whose linear dimensions are proportional to t½ for evaporation-condensation, and to t½ for surface diffusion. The proportionality constants are evaluated, and criteria are developed which permit one to estimate which process predominates in practice. Order of magnitude agreement is obtained with estimates of actual grooving speeds and profiles.

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Crossref · 10.1063/1.1722742

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Authors
Mullins, W. W.
Affiliations
Westinghouse Electric (United States) (US)
Corresponding author
Mullins, W. W.
Venue
Journal of Applied Physics
Published
1957-03-01
Volume
28
Issue
3
Pages
333-339
ISSN
  • 0021-8979 (ISSN-L)
  • 1089-7550
OpenAlex
W2017334281
Cited by
2,629
References
8
Citations by year
2026: 62 · 2025: 72 · 2024: 73 · 2023: 55 · 2022: 63 · 2021: 102 · 2020: 84 · 2019: 68 · 2018: 57 · 2017: 72 · 2016: 71 · 2015: 57 · 2014: 78 · 2013: 74 · 2012: 71
FWCI
11.00
Type
journal article
Language
en
Open access
closed
Locations
Journal of Applied Physics (publishedVersion)
Topics
  • Physical Sciences › Engineering › Computational Mechanics › Fluid Dynamics and Thin Films
  • Physical Sciences › Engineering › Mechanical Engineering › Thermodynamic and Structural Properties of Metals and Alloys
  • Physical Sciences › Materials Science › Materials Chemistry › Solidification and crystal growth phenomena
Keywords
thermal grooving, grain boundaries, polycrystalline materials, evaporation and condensation, surface diffusion, Gibbs-Thomson equation, groove profile

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