Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scale
In this study, the elastic and plastic behaviors of the ferrite and martensite phases of dual-phase (DP) steels were investigated using nanoindentation data and the related constitutive equations. First, hardness (H) and elastic modulus (E) were determined to derive the monotonic yield stress (σy) a...
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2025-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425017910 |
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| author | M. Fesahat M. Javidani M. Soltanieh M. Mahmoudi H. Vafaeenezhad |
| author_facet | M. Fesahat M. Javidani M. Soltanieh M. Mahmoudi H. Vafaeenezhad |
| author_sort | M. Fesahat |
| collection | DOAJ |
| description | In this study, the elastic and plastic behaviors of the ferrite and martensite phases of dual-phase (DP) steels were investigated using nanoindentation data and the related constitutive equations. First, hardness (H) and elastic modulus (E) were determined to derive the monotonic yield stress (σy) and Hollomon's parameter and then for work hardening exponent (K) and work hardening rate (n).Next, the results obtained by the nanomechanical approach implemented herein were validated using the semiquantitative data computed by numerical finite element analysis (FEA) and molecular dynamics (MD). The difference between plasticity of ferrite and martensite can be attributed ti the geometrically necessary dislocations (GNDs), which stimulate work hardening. The elastic and plastic data of both the phases were incorporated into FEA to simulate the load–displacement curves and the projected regions. In addition, the load–displacement curves of the ferrite and martensite phases and the hardness and Young's modulus determined by MD were in good agreement with the nanoindentation test and FEA results. The strain-rate sensitivity of ferrite, which exhibited a lower hardness and greater indentation depth, was 0.0985, whereas that of martensite was approximately 0.087. Furthermore, the TEM images proved the existence of GNDs at the ferrite–martensite interface and their role in cell formation in the ferrite zone and interphase region. |
| format | Article |
| id | doaj-art-1c5cf2d3b0944318a3a2420b6535919b |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-1c5cf2d3b0944318a3a2420b6535919b2025-08-20T03:58:11ZengElsevierJournal of Materials Research and Technology2238-78542025-09-013850351610.1016/j.jmrt.2025.07.133Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scaleM. Fesahat0M. Javidani1M. Soltanieh2M. Mahmoudi3H. Vafaeenezhad4School of Materials Science & Engineering, Iran University of Science and Technology, Tehran, IranDepartment of Applied Science, University of Québec at Chicoutimi, Saguenay, QC, G7H 2B1, CanadaSchool of Materials Science & Engineering, Iran University of Science and Technology, Tehran, IranSchool of Materials Science & Engineering, Iran University of Science and Technology, Tehran, IranDepartment of Materials Science and Engineering, Engineering Faculty, Ferdowsi University of Mashhad, Azadi Square, Mashhad, Iran; Corresponding author.In this study, the elastic and plastic behaviors of the ferrite and martensite phases of dual-phase (DP) steels were investigated using nanoindentation data and the related constitutive equations. First, hardness (H) and elastic modulus (E) were determined to derive the monotonic yield stress (σy) and Hollomon's parameter and then for work hardening exponent (K) and work hardening rate (n).Next, the results obtained by the nanomechanical approach implemented herein were validated using the semiquantitative data computed by numerical finite element analysis (FEA) and molecular dynamics (MD). The difference between plasticity of ferrite and martensite can be attributed ti the geometrically necessary dislocations (GNDs), which stimulate work hardening. The elastic and plastic data of both the phases were incorporated into FEA to simulate the load–displacement curves and the projected regions. In addition, the load–displacement curves of the ferrite and martensite phases and the hardness and Young's modulus determined by MD were in good agreement with the nanoindentation test and FEA results. The strain-rate sensitivity of ferrite, which exhibited a lower hardness and greater indentation depth, was 0.0985, whereas that of martensite was approximately 0.087. Furthermore, the TEM images proved the existence of GNDs at the ferrite–martensite interface and their role in cell formation in the ferrite zone and interphase region.http://www.sciencedirect.com/science/article/pii/S2238785425017910Dual-phase steelNanoindentationHeat treatmentFinite element analysis (FEA)Molecular dynamics (MD) |
| spellingShingle | M. Fesahat M. Javidani M. Soltanieh M. Mahmoudi H. Vafaeenezhad Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scale Journal of Materials Research and Technology Dual-phase steel Nanoindentation Heat treatment Finite element analysis (FEA) Molecular dynamics (MD) |
| title | Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scale |
| title_full | Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scale |
| title_fullStr | Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scale |
| title_full_unstemmed | Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scale |
| title_short | Hybrid experimental–numerical study on nanoindentation response of dual-phase steels: From macroscale to atomic scale |
| title_sort | hybrid experimental numerical study on nanoindentation response of dual phase steels from macroscale to atomic scale |
| topic | Dual-phase steel Nanoindentation Heat treatment Finite element analysis (FEA) Molecular dynamics (MD) |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425017910 |
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