Atomistic phase field chemomechanical modeling of dislocation-solute-precipitate interaction in Ni–Al–Co

JR Mianroodi, P Shanthraj, P Kontis, J Cormier, B Gault… - Acta Materialia, 2019 - Elsevier
Dislocation-precipitate interaction and solute segregation play important roles in controlling
the mechanical behavior of Ni-based superalloys at high temperature. In particular, the …

CALPHAD integrated grain boundary co-segregation design: Towards safe high-entropy alloys

L Wang, RD Kamachali - Journal of Alloys and Compounds, 2023 - Elsevier
Along with the desire for develo** novel multi-principal element alloys, also known as
high-entropy alloys, the concern about their safe application is also increasingly growing …

Segregation-assisted spinodal and transient spinodal phase separation at grain boundaries

R Darvishi Kamachali, A Kwiatkowski da Silva… - npj Computational …, 2020 - nature.com
Segregation to grain boundaries affects their cohesion, corrosion, and embrittlement and
plays a critical role in heterogeneous nucleation. In order to quantitatively study segregation …

Precipitation of T1 and θ′ Phase in Al-4Cu-1Li-0.25Mn During Age Hardening: Microstructural Investigation and Phase-Field Simulation

I Häusler, C Schwarze, MU Bilal, D Valencia Ramirez… - Materials, 2017 - mdpi.com
Experimental and phase field studies of age hardening response of a high purity Al-4Cu-1Li-
0.25 Mn-alloy (mass%) during isothermal aging are conducted. In the experiments, two …

Exploration of the microstructure space in TiAlZrN ultra-hard nanostructured coatings

V Attari, A Cruzado, R Arroyave - Acta Materialia, 2019 - Elsevier
Ti 1− x− y Al x Zr y N cubic alloys within the 25–70% Al composition range have high age-
hardening capabilities due to metastable phase transition pathways at high temperatures …

First Evidence for Mechanism of Inverse Ripening from In-situ TEM and Phase-Field Study of δ′ Precipitation in an Al-Li Alloy

J Park, RD Kamachali, SD Kim, SH Kim, CS Oh… - Scientific reports, 2019 - nature.com
In-situ TEM investigation of aging response in an Al–7.8 at.% Li was performed at 200° C up
to 13 hours. Semi-spherical δ′ precipitates growing up to an average radius of 7.5 nm were …

[HTML][HTML] Creep anisotropy of additively manufactured Inconel-738LC: Combined experiments and microstructure-based modeling

K Kianinejad, RD Kamachali, A Khedkar… - Materials Science and …, 2024 - Elsevier
The current lack of quantitative knowledge on processing-microstructure–property
relationships is one of the major bottlenecks in today's rapidly expanding field of additive …

[HTML][HTML] Mean-field modeling and Phase-field simulation of Grain Growth under Directional driving forces

VM Kindrachuk, RD Kamachali - Materialia, 2024 - Elsevier
Directional grain growth is a common phenomenon in the synthetic and natural evolution of
various polycrystals. It occurs in the presence of an external driving force, such as a …

Numerical benchmark of phase-field simulations with elastic strains: precipitation in the presence of chemo-mechanical coupling

RD Kamachali, C Schwarze, M Lin, M Diehl… - Computational Materials …, 2018 - Elsevier
Phase-field studies of solid-state precipitation under strong chemo-mechanical coupling are
performed and benchmarked against the existing analytical solutions. The open source …

Phase-field study of ripening and rearrangement of precipitates under chemomechanical coupling

C Schwarze, A Gupta, T Hickel, R Darvishi Kamachali - Physical Review B, 2017 - APS
We investigate the evolution of large number of δ′ coherent precipitates from a
supersaturated Al-8 at.% Li alloy using large-scale phase-field simulations. A …