Team Santofimia Navarro

This research combines fundamental theoretical investigations, advanced simulation techniques and high resolution experiments to explain mechanisms controlling microstructure development and their influence on the resulting properties of steels and other alloys. This includes the fundamental study of non-equilibrium phase transformations and interactions between non-equilibrium phases in metals. Her group applies the acquired physical insights to design new steels with exceptional properties in collaboration with leading industries, such as Tata Steel, ArcelorMittal, SKF, VDL Weweler, Thyssen-Krupp and Tenaris.

Research

On-going Projects:

2021/09 – 2024/03 “Optidamatol” Optimisation of high damage tolerance at very high strengths by the quenching and partitioning process.
- Funded by Research Fund for Coal and Steel (European Commission)
- Partners: Universitat Politecnica de Catalunya (ES), Sidenor (ES), Fundacion Idonial (ES), Hilti AG (Liechtenstein), TU Delft.

2020/10 - 2024/04 “Martbain” Innovative MARTensite-BAINite microstructures to provide industrially viable solutions to the need for high performance steel grades.
- Funded by Research Fund for Coal and Steel (European Commission)
- Partners: TATA Steel (NL), Ascometal (FR), CENIM (ES), Schaeffler (GE), TU Delft.

2019/06 - 2022/12 “QPInox” Development of New Martensitic Stainless Steels for Automotive Lightweight Structural Applications
- Funded by Research Fund for Coal and Steel (European Commission)
- Partners: RINA (IT), IMDEA (ES), Acerinox (ES), TU Delft.

2019/08 – 2022/08 Accelerated processing of advanced high strength steels through new metallurgical routes
- Funded by TKI funding, TATA Steel (project under PPS-HTSM program)
- Partners: M2i, TATA Steel, TU Delft.

2019/01 - 2024/01 Fundamental study of contact fatigue strength of rail after grinding
- Funded by TKI funding, Prorail
- Partners: M2i, ProRail, TU Delft.

2018/11 – 2022/1 Influence of up-stream processes on wind turbine main bearings, microstructure and performance
- Funded by TKI funding, Siemens-Gamesa, SKF
- Partners: M2i, Siemens-Gamesa Renewable Energy (DE), SKF R&TD (NL), TU Delft.

2018/04 – 2023/04 Digitally Enhanced New Steel Product Development (DENS)
- Funded by PPS – TATA Steel
- Partners: M2i, TATA Steel, TU Delft, U. Twente, TU Eindhoven, MPIE.

Highlighted Publications:

X Ou, J Sietsma, MJ Santofimia. Fundamental study of nonclassical nucleation mechanisms in iron. Acta Materialia 226 (2022) 117655
T Koopmans, J Sietsma, L Zhao, MJ Santofimia. The thermal stability of quenched and partitioned steel microstructures. Steel Research International 92(12) (2021) 2100290.
V Atreya, C Bos, MJ Santofimia. Understanding ferrite deformation caused by austenite to martensite transformation in dual phase steel. Scripta Materialia 202 (2021) 114032
S Ayenampudi, C Celada-Casero, Z Arechabaleta, M Arribas, A Arlazarov, J Sietsma, MJ Santofimia. Microstructural impact of Si and Ni during high temperature Quenching and Partitioning process in medium-Mn steels. Materials and Metallurgical Transactions A. 52(4) (2021) 1321-1335.
X Ou, J Sietsma, MJ Santofimia, Coalescence of martensite under uniaxial tension of iron crystallites by atomistic simulations. Materials Science and Technology (2020) 1-9
AM Ravi, J Sietsma, MJ Santofimia, The role of grain-boundary cementite in bainite formation in high-carbon steels. Scripta Materialia 185 (2020) pp. 7-11.
AM Ravi, A Kumar, M Herbig, J Sietsma, MJ Santofimia, Impact of austenite grain boundaries and ferrite nucleation on bainite formation in steels. Acta Materialia 188 (2020), pp. 424-434
AM Ravi, A Navarro-Lopez, J Sietsma, MJ Santofimia. Influence of martensite/austenite interfaces on bainite formation in low-alloy steels below Ms. Acta Materialia 188 (2020), pp. 394-405.
A Navarro-Lopez, J Hidalgo, J Sietsma, MJ Santofimia. Unravelling the mechanical behaviour of advanced multiphase steels isothermally obtained below Ms. Materials & Design 188 (2020) 108484.