Modeling of temperature- and strain-driven intermetallic compound evolution in an Al-Mg system via a multiphase-field approach with application to refill friction stir spot welding

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

The prospect of joining dissimilar materials via solid-state processes presents an opportunity to obtain multi-material structures having a synergy of desirable properties of the joined materials. However, the issue of the formation of intermetallic compounds at the weld interface of dissimilar materials arises with that, depending upon the temperature and pressure conditions as per phase diagram. As the thickness of the intermetallic compounds may determine the mechanical properties of the joint, understanding the driving mechanisms and evolution of these intermetallic compounds in solid-state joining processes, such as refill friction stir spot welding (refill FSSW), is crucial. In this contribution, we account for the effect of different driving forces in a multiphase-field approach and investigate the evolution of the intermetallic compounds driven by chemical and mechanical forces. A finite-element simulation of the refill FSSW is pursued to obtain the peak temperature and strain at different locations of the weld interface. The microstructure simulations obtained via the multiphase-field model give insight into the morphology and kinetics evolution of the intermetallic compounds for both, the absence of strain (purely chemically-driven model) as well as presence of strain (chemo-mechanically-driven model). The consideration of strain proves to result in thicker intermetallic compound layer. Furthermore, the impact of interface energy and initial grain configuration is found to be significant on the overall intermetallic compounds evolution.
OriginalspracheEnglisch
Aufsatznummer105059
ZeitschriftJournal of the Mechanics and Physics of Solids
Jahrgang169
ISSN0022-5096
DOIs
PublikationsstatusErschienen - 01.12.2022

Bibliographische Notiz

Funding Information:
Benjamin Klusemann gratefully acknowledges partial funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - project number 464986536.

Funding Information:
The authors gratefully acknowledge financial support of the research through the programmes “Virtual Materials Design” and “Material Systems Engineering (MSE)” of the Helmholtz association. Data and data processing are provided within the KNMFi and MDMC initiatives (no. 43.31.01) through the research data infrastructure Kadi4Mat [ https://kadi.iam-cms.kit.edu ].

Funding Information:
The authors gratefully acknowledge financial support of the research through the programmes “Virtual Materials Design” and “Material Systems Engineering (MSE)” of the Helmholtz association. Data and data processing are provided within the KNMFi and MDMC initiatives (no. 43.31.01) through the research data infrastructure Kadi4Mat [https://kadi.iam-cms.kit.edu]. Benjamin Klusemann gratefully acknowledges partial funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - project number 464986536.

Publisher Copyright:
© 2022 Elsevier Ltd

DOI