Modeling precipitation kinetics for multi-phase and multi-component systems using particle size distributions via a moving grid technique

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

The collection and coupling of thermodynamic data following the Calphad framework is important for the computational alloy and process design. The microstructure and the precipitation kinetics have a significant influence on the microstructure and mechanical properties of multi-component alloys in solid state; therefore, it is essential to account for solid state phase transformations via thermo-chemical process simulations. In this work an efficient numerical scheme for a Kampmann-Wagner numerical (KWN) model, which takes into account multi-component nucleation and growth theories via the coupling to the open thermodynamic software-package OpenCalphad, is developed and implemented. By the usage of the Calphad approach, it becomes feasible to describe complex multi-component alloy systems. The developed KWN model can take into account effects resulting from the generation or annihilation of vacancies by an off-equilibrium diffusion constant. For the solution of the particle size distribution an efficient and flexible moving grid algorithm is elaborated, which provides a robust and adaptive solution scheme for the simulation of nucleation, growth, coarsening and reversion. The model is applied to simulate the precipitation kinetics of recently published in-situ anomalous small angle X-ray scattering experiments studying reversion of an AA7xxx alloy and the identified model can reproduce the essential characteristics of these reversion experiments over a wide temperature range.

Original languageEnglish
Article number117053
JournalActa Materialia
Volume215
Number of pages14
ISSN1359-6454
DOIs
Publication statusPublished - 15.08.2021

    Research areas

  • Aluminum alloys, Kampmann-Wagner numerical model, Moving grid technique, OpenCalphad, Precipitation kinetics
  • Engineering

Recently viewed

Activities

  1. Revitalizing the Script as a Concept to Understand Structure and Agency in Institutional Theory
  2. An Axiomatic Approach to Decision under Knightian Uncertainty
  3. On the Difficulties and Promises of Accessing and Mobilizing Information around Deportation-related Identification
  4. Special Interest Group: Digital Innovation, Transformation & Entrepreneurship Mentoring Program
  5. Provenance as (Linked) Data
  6. Ecology & Evolution, Lecture series 2012
  7. Self-Organization for Resilience in Russian Anti-War Networks
  8. Workshop - pre-ICIS IFIP WG 8.2 OASIS Workshop on Criticality and Values in Digital Transformation Research
  9. JMS Conference: Repurposing Management for the Public Good: Processes, Obstacles and Unintended Consequences
  10. 1st Organizing Creativity – Transalpine Paper Development Workshop
  11. The Selfie Spot in Theory and Practice
  12. Institutionalizing the Responsible Management Logics in Sustainability Transitions: A Multi-Level Perspective
  13. The relationship between intragenerational and intergenerational justice in the use of ecosystems and their services. An ecological-economic mode.
  14. 24th International Conference on System Theory, Control and Computing - ICSTCC 2020
  15. Impulse Talk: Overview of the development of the sharing economy from different perspectives
  16. Moderator im Panel „Dimensions of learning for a degrowth society”
  17. Objectivity in Political Science
  18. International Workshop on “European integration in the geopolitical age”
  19. Intraorganizational tensions around being good: Structures and practices or organizing purchasing and CSR in garment retailers and brands
  20. Processing Uncertainty. Timescapes in German Schools in the Context of Refugee Migration from Ukraine
  21. Universität Alberta
  22. Nutzung von Spanabfällen durch Solid-State-Recycling
  23. A diary study on the social dynamics of knowledge hiding and the role of entitlement
  24. 38th EGOS Colloquium - EGOS 2022
  25. Climate-Resilient Practices in the Second Largest Fruit-Growing Region In Europe: Addressing Organizational Needs In Times Of Climate Change
  26. Muralist Practices of the Algerian Avant-Gardes in the 1960s & '70s
  27. 19. Nachwuchsworkshop der - DGPs 2022
  28. Organized Creativity Virtual Workshop
  29. Vis-à-Vis
  30. 100% Renewable Energy Conference 2016
  31. Conducting (Intensive) Longitudinal Studies: Some Insights, Tips, and Tricks
  32. Web as Culture - 2009