GRK2802: Microstructure Design of Steel-Spinel Composites via Spark Plasma Sintering Process
References to related material | https://doi.org/10.1002/adem.202503157 | |
Type of the data | Dataset | |
Type of the data | Image | |
Type of the data | Text | |
Total size of the dataset | 33414905 | |
Author | Mehdizadehlima, Mahnaz | |
Author | Schimpf, Christian | |
Author | Martin, Stefan | |
Author | Fabrichnaya, Olga | |
Author | Rafaja, David | |
Upload date | 2026-07-03T20:36:06Z | |
Publication date | 2026-07-03T20:36:06Z | |
Publication date | 2026-07-03 | |
Abstract of the dataset | Compact steel-spinel composites with a specific microstructure were produced by spark plasma sintering, using powder mixtures of high-alloy steel AISI 316L, MgO, and Cr2O3 or Fe2O3 as starting materials. The reaction diffusion between MgO and Cr2O3 or Fe2O3 always led to the formation of an Mg-based spinel. The thermodynamic phase stability of the respective corundum-like oxide with respect to the oxygen partial pressure decided about the presence or absence of side reactions, which were utilized as an efficient tool for microstructure design of the steel-spinel composites.The use of Fe2O3 as one of the starting compounds initiated various redox reactions that promoted the formation of mixed spinel phases at the steel/ceramic interface and the transformation of MgO to (Mg, Fe)O, which accommodates, in addition to iron, also other divalent alloying elements from the steel. The phase composition of the composites and the spatial distributions of individual phases and their chemical compositions were investigated using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, electron backscatter diffraction, and electron probe microanalysis. The microstructure formation was substantiated by thermodynamic calculations. The role of oxidizing and reducing agents that are involved in the microstructure design is discussed. | |
Public reference to this page | https://opara.zih.tu-dresden.de/handle/123456789/2782 | |
Publisher | Technische Universität Bergakademie Freiberg | |
Specification of the discipline(s) | 4 | |
Title of the dataset | GRK2802: Microstructure Design of Steel-Spinel Composites via Spark Plasma Sintering Process | |
Project abstract | The doctoral research Project P8 investigates the relationships between microstructural features, temperature-induced microstructure evolution, and electrical conductivity in multiphase composite materials processed by FAST/SPS. The project focuses on the role of diffusion processes, phase transformations, grain growth, defect evolution, and the formation of electrically conductive percolation paths, combining advanced microscopic characterization with in-situ high-temperature experiments and microstructure-based modeling. | |
Funding Acknowledgement | The dataset was generated within the framework of the Research Training Group GRK 2802 (project ID: 461482547) funded by the German Research Foundation (DFG). | |
Public project website(s) | https://tu-freiberg.de/en/research/grk2802 | |
Project title | GRK2802_P8_Microstructure design of composite materials using FAST/SPS |