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Title: Phase transformations at interfaces: Observations from atomistic modeling

Journal Article · · Current Opinion in Solid State and Materials Science
 [1];  [2];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  3. George Mason Univ., Fairfax, VA (United States). Dept. of Physics and Astronomy

Here, we review the recent progress in theoretical understanding and atomistic computer simulations of phase transformations in materials interfaces, focusing on grain boundaries (GBs) in metallic systems. Recently developed simulation approaches enable the search and structural characterization of GB phases in single-component metals and binary alloys, calculation of thermodynamic properties of individual GB phases, and modeling of the effect of the GB phase transformations on GB kinetics. Atomistic simulations demonstrate that the GB transformations can be induced by varying the temperature, loading the GB with point defects, or varying the amount of solute segregation. The atomic-level understanding obtained from such simulations can provide input for further development of thermodynamics theories and continuous models of interface phase transformations while simultaneously serving as a testing ground for validation of theories and models. They can also help interpret and guide experimental work in this field.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF)
Grant/Contract Number:
AC52-07NA27344; OCI-1053575
OSTI ID:
1376006
Alternate ID(s):
OSTI ID: 1398618
Report Number(s):
LLNL-JRNL-680498; PII: S1359028616300304
Journal Information:
Current Opinion in Solid State and Materials Science, Vol. 20, Issue 5; ISSN 1359-0286
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (9)

Grain boundary structure in high-entropy alloys journal January 2020
Atomistic Study of the Effect of Magnesium Dopants on the Strength of Nanocrystalline Aluminum journal February 2019
Predicting phase behavior of grain boundaries with evolutionary search and machine learning journal February 2018
Role of disordered bipolar complexions on the sulfur embrittlement of nickel general grain boundaries journal July 2018
Dislocation content in random high angle grain boundaries journal April 2019
Influence of multiphase microstructure evolution and Fe-rich phases on Cu uphill diffusion in Al-Si-Cu-Mg alloys journal September 2019
Linear Complexions: Metastable Phase Formation and Coexistence at Dislocations journal March 2019
Predicting phase behavior of grain boundaries with evolutionary search and machine learning text January 2017
Grain boundary phases in bcc metals preprint January 2017