OpenPhase - Microstructure Simulation

OpenPhase is a powerful microstructure simulation suite made for metallic materials.

Simulation Software

OpenPhase Studio is a powerful microstructure simulation suite made for metallic materials. Using multi-physics models embedded in the phase-field method, materials processes such as solidification, tempering, mechanical testing and many more can be simulated. OpenPhase is available in two flavours, OpenPhase Studio and OpenPhase Core. OpenPhase Studio is our full-featured microstructure simulation suite with user-friendly GUI, intuitive simulation setup and on-the-fly data analysis. An open-source C++ library is available with OpenPhase Core, which includes the core OpenPhase functionality and offers full flexibility in building custom simulations. OpenPhase enables you to

  • Innovate and accelerate materials development
  • Complement experiments
  • Optimize processes through better understanding of materials behavior

Application: Solidification


The phase-field method was once developed for this very problem: casting simulations. Since then, many new developments have raised this method to the tool of choice for researching microstructure development and evolution during and after casting.


In this dendritic solidification simulation conducted with OpenPhase Studio, the focus is on the transport of alloying elements by means of fluid flow and diffusion in liquid, as well as solid. Fluid flow is visualized with coloured lines, illustrating flow velocity.

Our Products

OpenPhase Studio

The full-featured microstructure simulation suite OpenPhase Studio offers an intuitive GUI including documentation and on-the-fly visualization. New simulations can be quickly created from pre-defined material and process presets.

OpenPhase Core

If flexibility is essential, a powerful C++ library is available in OpenPhase Core. The open-source code can be expanded by using OpenPhase Modules, such as Advanced Mechanics and Thermodynamic Interfaces.


OpenPhase support answers technical and scientific questions and helps you quickly find the right simulation setup for your material and process parameters.

Custom Solutions

Custom solutions range from custom simulations tailored to your research over implementation of new models to parameter studies and development of custom interfaces.

Application: Virtual Creep test

In the quest for more fuel-efficient turbines, developing heat resistant materials for turbine blades is a high priority. Mechanical properties and especially creep behaviour at high temperatures are of utmost importance, as turbine blade elongation determines the effective lifespan of the blade.
OpenPhase Studio is used here to simulate microstructure evolution under creep conditions and visualize creep behaviour, stress-strain diagrams and other properties of the simulated domain for more efficient material research.

OpenPhase Features

The development of OpenPhase started in 2008 at ICAMS, one of the world-leading materials simulation institutes. With today over 50 man-years of development, OpenPhase is the most feature-rich phase-field code available. Continuous development by the OpenPhase Solutions Team ensures that OpenPhase is state-of-the-art in simulating microstructure evolution.

Intuitive graphical user-interface

Guided creation of simulations, integrated documentation and presets for various materials and processes.

Modular library

OpenPhase Studio and OpenPhase Core use a modular structure that allows combining different physical modules into a single simulation or simulate a complex process through consecutive simulation steps.

Powerful diffusion module

Realistic simulation of diffusion and phase transformation. Coupling to Thermo-Calc and Open Calphad enables realistic simulation of complex material systems.

Extensive mechanics module

Elasticity, crystal plasticity and finite strain for complex mechanics simulations on evolving or static microstructures

Straightforward flow solver

Lattice Boltzmann solver for calculating melt flow during solidification

Flexible nucleation and microstructure creation

Easy creation of initial microstructures, realistic nucleation based on various properties.


OpenPhase Core

We are living for free software. For OpenPhase Solutions GmbH, open source software is a commitment – we are working in a close collaboration with the ICAMS (Interdisciplinary Centre for Advanced Material Simulation) at Ruhr-University Bochum on the development of OpenPhase Core. OpenPhase Core is published under the GPL v3 license.

Get in Touch

Our Team

Dr. Johannes Görler

Managing Director

+49 234 3226260


Matthias Stratmann

Managing Director

+49 234 32 26764


Dr. Oleg Shchyglo


Prof. Dr. Ingo Steinbach

Senior Consultant

Dr. Marvin Tegeler

Technical Support



OpenPhase Solutions GmbH acknowledges funding by the federal state NRW within the Mittelstand.Innovativ! funding program.