An integrated experimental-numerical study of martensite/ferrite interface damage initiation in dual-phase steels

Lei Liu; Francesco Maresca; Tijmen Vermeij; Johan P.M. Hoefnagels; Marc G.D. Geers; Varvara G. Kouznetsova

doi:10.1016/j.scriptamat.2023.115798

An integrated experimental-numerical study of martensite/ferrite interface damage initiation in dual-phase steels

Lei Liu
, Francesco Maresca
, Tijmen Vermeij
, Johan P.M. Hoefnagels
, Marc G.D. Geers
, Varvara G. Kouznetsova (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

20 Citations (Scopus)

193 Downloads (Pure)

Abstract

Martensite/ferrite (M/F) interface damage is relevant to failure of many dual-phase (DP) steels, but the underlying microscale mechanisms remain unclear. Through an integrated experimental-numerical study, this work examines the recent hypothesis that (lath) martensite substructure boundary sliding triggers and dominates M/F interface damage initiation accompanied by apparent martensite plasticity. The mesoscale morphology and prior austenite grain reconstruction are used as modelling inputs. A multi-scale framework is adopted to predict the interface damage initiation. The M/F interface damage initiation sites predicted by the model based on a sliding-triggered interface damage mechanism adequately agree with those identified from in-situ experiments,
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	https://doi.org/10.1016/j.scriptamat.2023.115798
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
Materials Innovation Institute (M2i)

Keywords

Damage initiation
Dual-phase steel
Experimental-numerical study
Martensite/ferrite interface
Substructure boundary sliding

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title = "An integrated experimental-numerical study of martensite/ferrite interface damage initiation in dual-phase steels",

abstract = "Martensite/ferrite (M/F) interface damage is relevant to failure of many dual-phase (DP) steels, but the underlying microscale mechanisms remain unclear. Through an integrated experimental-numerical study, this work examines the recent hypothesis that (lath) martensite substructure boundary sliding triggers and dominates M/F interface damage initiation accompanied by apparent martensite plasticity. The mesoscale morphology and prior austenite grain reconstruction are used as modelling inputs. A multi-scale framework is adopted to predict the interface damage initiation. The M/F interface damage initiation sites predicted by the model based on a sliding-triggered interface damage mechanism adequately agree with those identified from in-situ experiments, 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.",

keywords = "Damage initiation, Dual-phase steel, Experimental-numerical study, Martensite/ferrite interface, Substructure boundary sliding",

author = "Lei Liu and Francesco Maresca and Tijmen Vermeij and Hoefnagels, \{Johan P.M.\} and Geers, \{Marc G.D.\} and Kouznetsova, \{Varvara G.\}",

year = "2024",

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doi = "10.1016/j.scriptamat.2023.115798",

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AU - Liu, Lei

AU - Maresca, Francesco

AU - Vermeij, Tijmen

AU - Hoefnagels, Johan P.M.

AU - Geers, Marc G.D.

AU - Kouznetsova, Varvara G.

PY - 2024/1/15

Y1 - 2024/1/15

N2 - Martensite/ferrite (M/F) interface damage is relevant to failure of many dual-phase (DP) steels, but the underlying microscale mechanisms remain unclear. Through an integrated experimental-numerical study, this work examines the recent hypothesis that (lath) martensite substructure boundary sliding triggers and dominates M/F interface damage initiation accompanied by apparent martensite plasticity. The mesoscale morphology and prior austenite grain reconstruction are used as modelling inputs. A multi-scale framework is adopted to predict the interface damage initiation. The M/F interface damage initiation sites predicted by the model based on a sliding-triggered interface damage mechanism adequately agree with those identified from in-situ experiments, 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.

AB - Martensite/ferrite (M/F) interface damage is relevant to failure of many dual-phase (DP) steels, but the underlying microscale mechanisms remain unclear. Through an integrated experimental-numerical study, this work examines the recent hypothesis that (lath) martensite substructure boundary sliding triggers and dominates M/F interface damage initiation accompanied by apparent martensite plasticity. The mesoscale morphology and prior austenite grain reconstruction are used as modelling inputs. A multi-scale framework is adopted to predict the interface damage initiation. The M/F interface damage initiation sites predicted by the model based on a sliding-triggered interface damage mechanism adequately agree with those identified from in-situ experiments, 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.

KW - Damage initiation

KW - Dual-phase steel

KW - Experimental-numerical study

KW - Martensite/ferrite interface

KW - Substructure boundary sliding

UR - https://www.scopus.com/pages/publications/85174062259

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DO - 10.1016/j.scriptamat.2023.115798

M3 - Article

SN - 1359-6462

VL - 239

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 115798

ER -

An integrated experimental-numerical study of martensite/ferrite interface damage initiation in dual-phase steels

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