Abstract
confirming the key role of substructure boundary sliding. Moreover, the M/F interface damage initiation strongly correlates with a low M/F strain partitioning rather than the commonly accepted strong M/F strain partitioning. This fundamental understanding is instrumental for the future optimization of DP steel microstructures.
Original language | English |
---|---|
Article number | 115798 |
Number of pages | 10 |
Journal | Scripta Materialia |
Volume | 239 |
DOIs | |
Publication status | Published - 15 Jan 2024 |
Funding
Recent crystal plasticity simulations [39] indicated that the substructure boundary sliding might also trigger and dominate M/F interface damage initiation upon the occurrence of apparent martensite plasticity. This sliding-triggered interface damage mechanism has been supported by experimental observations [40] . In this work, an integrated experimental-numerical study is conducted to examine this hypothesis [39] and gain further insights for the interface damage initiation. The interface damage initiation is predicted numerically by applying the recently developed multi-scale framework [41] on the experimental mesoscale morphology and crystallography. The predicted damage initiation sites are compared against those observed in the experiments.
Funders | Funder number |
---|---|
Materials Innovation Institute (M2i) |
Keywords
- Damage initiation
- Dual-phase steel
- Experimental-numerical study
- Martensite/ferrite interface
- Substructure boundary sliding