Grain boundary complexion transitions

PR Cantwell, T Frolov, TJ Rupert… - Annual Review of …, 2020 - annualreviews.org
Grain boundaries can undergo phase-like transitions, called complexion transitions, in
which their structure, composition, and properties change discontinuously as temperature …

High-entropy grain boundaries

J Luo, N Zhou - Communications Materials, 2023 - nature.com
As high-entropy alloys receive an increasing amount of attention, an interesting scientific
question arises: can grain boundaries be “high entropy”? In 2016, we proposed “high …

Probing the densification mechanisms during flash sintering of ZnO

Y Zhang, J Nie, JM Chan, J Luo - Acta Materialia, 2017 - Elsevier
Using ZnO as a model system, the densification mechanisms of flash sintering are
investigated. Controlled experiments via limiting the maximum current or the effective ramp …

Computing grain boundary “phase” diagrams

J Luo - Interdisciplinary Materials, 2023 - Wiley Online Library
Grain boundaries (GBs) can be treated as two‐dimensional (2‐D) interfacial phases (also
called “complexions”) that can undergo interfacial phase‐like transitions. As bulk phase …

Interfacial superstructures and chemical bonding transitions at metal-ceramic interfaces

C Yang, C Hu, C **ang, H Nie, X Gu, L **e, J He… - Science …, 2021 - science.org
Metal-ceramic interfaces are scientifically interesting and technologically important.
However, the transition of chemical bonding character from a metal to a nonoxide ceramic is …

Review of grain boundary complexion engineering: Know your boundaries

AR Krause, PR Cantwell, CJ Marvel… - Journal of the …, 2019 - Wiley Online Library
Grain boundary structure‐property relationships influence bulk performance and, therefore,
are an important criterion in materials design. Materials scientists can generate different …

Relating the kinetics of grain-boundary complexion transitions and abnormal grain growth: A Monte Carlo time-temperature-transformation approach

CJ Marvel, C Riedel, WE Frazier, AD Rollett… - Acta Materialia, 2022 - Elsevier
Grain boundaries undergo thermally-activated, first-order transitions that result in
discontinuous changes of interfacial properties. Importantly, grain boundary transitions lead …

Genetic algorithm-guided deep learning of grain boundary diagrams: addressing the challenge of five degrees of freedom

C Hu, Y Zuo, C Chen, SP Ong, J Luo - Materials today, 2020 - Elsevier
Grain boundaries (GBs) often control the processing and properties of polycrystalline
materials. Here, potentially transformative research is represented by constructing GB …

Role of disordered bipolar complexions on the sulfur embrittlement of nickel general grain boundaries

T Hu, S Yang, N Zhou, Y Zhang, J Luo - Nature communications, 2018 - nature.com
Minor impurities can cause catastrophic fracture of normally ductile metals. Here, a classic
example is represented by the sulfur embrittlement of nickel, whose atomic-level mechanism …

Computational modeling of grain boundary segregation: A review

C Hu, R Dingreville, BL Boyce - Computational Materials Science, 2024 - Elsevier
Nearly all metals, alloys, ceramics, and their associated composites are polycrystalline in
nature, with grain boundaries that separate well-defined crystalline regions that influence …