Mathematical‐physical model of resistance sintering with current conducting electrode punches of steel ceramic composites

Guk, Sergey; Yanina, A.; Müller, W.; Kawalla, Rudolf

doi:10.1002/mawe.200900541

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…The composite material was produced by a conductive sintering process in a multifunctional simulation system GLEEBLE HDS‐V40 (company DSI, USA). Details of the sintering process are described in 24. The commercial steel powder of the austenitic steel AISI 304 (TLS, Bitterfeld, Germany) had a mean grain size of 26 µm and the MgO‐PSZ powder of 1.3 µm.…”

Section: Methodsmentioning

confidence: 99%

Microstructure and Local Strain Fields in a High‐Alloyed Austenitic Cast Steel and a Steel‐Matrix Composite Material after in situ Tensile and Cyclic Deformation

Weidner¹,

Yanina²,

Guk³

et al. 2011

steel research int.

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The tensile and cyclic deformation behaviour of a new metastable austenitic stainless cast TRIP (TRansformation Induced Plasticity) steel and a composite material consisting of austenitic steel matrix (AISI 304) with 5% MgO partially stabilized ZrO2 (MgO‐PSZ) was studied in‐situ in a scanning electron microscope (SEM). In‐situ tests in the SEM show the evolution of the microstructure with the strain for uniaxial deformation and the number of cycles during fatigue, respectively. Initially, deformation bands develop. In these bands, the face‐centred cubic austenite transforms into the hexagonal ε‐martensite and subsequently to the body‐centred cubic α'‐ martensite. This evolution was studied by different SEM techniques. Electron backscatter diffraction (EBSD) was applied for phase and orientation identification. The dislocation arrangement was investigated applying the electron channelling contrast imaging (ECCI) technique to different deformation stages. The studies are completed with measurements of local displacement fields using digital image correlation (DIC).

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Section: Methodsmentioning

confidence: 99%

Microstructure and Local Strain Fields in a High‐Alloyed Austenitic Cast Steel and a Steel‐Matrix Composite Material after in situ Tensile and Cyclic Deformation

Weidner¹,

Yanina²,

Guk³

et al. 2011

steel research int.

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“…Beside the infiltration of ceramic macrostructures by steel melts the powder metallurgy is another way of manufacturing these TRIP-matrix-composites in which all scopes of design are permitted. The authors had already published results for consolidation of these composites by means of conventional 2) and conductive sintering 3) as well as powder forging 4) and hot pressing.…”

Section: Introductionmentioning

confidence: 99%

Flow Curve Modelling of an Mg-PSZ Reinforced TRIP-matrix-composite

2014

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A prediction model for cold flow curves was introduced for a new class of composite materials known as TRIP-matrix-composites consisting of three phases, austenite, strain-induced martensite and ZrO2. The content of the ceramic phase was varied between 0 and 30%, whereas the particle size of the ceramic was selected to be 10 to 30 μm. For the manufacturing of the composite material the powder metallurgical route including hot press procedure was chosen and very dense material could be produced.Included in the model is the hydrostatic stress σm close to the circumferential surface of the compression test sample. The hydrostatic stress was varied using different material compositions and true strain values. To calculate the cold flow curves the ISO-E-method was applied. The calculated results show a consistent congruency with the experimental data.

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Modeling the Local Deformation and Transformation Behavior of Cast X8CrMnNi16-6-6 TRIP Steel and 10% Mg-PSZ Composite Using a Continuum Mechanics-Based Crystal Plasticity Model

et al. 2020

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A Transformation-Induced Plasticity (TRIP) steel matrix reinforced with magnesium-partially stabilized zirconia (Mg-PSZ) particles depicts a superior energy absorbing capacity during deformation. In this research, the TRIP/TWIP material model already developed in the framework of the Düsseldorf Advanced Material Simulation Kit (DAMASK) is tuned for X8CrMnNi16-6-6 TRIP steel and 10% Mg-PSZ composite. A new method is explained to more accurately tune this material model by comparing the stress/strain, transformation, twinning, and dislocation glide obtained from simulations with respective experimental acoustic emission measurements. The optimized model with slight modification is assigned to the steel matrix in 10% Mg-PSZ composite material. In the simulation model, zirconia particles are assigned elastic properties with a perfect ceramic/matrix interface. Local deformation, transformation, and the twinning behavior of the steel matrix due to quasi-static tensile load were analyzed. The comparison of the simulation results with acoustic emission data shows good correlation and helps correlate acoustic events with physical attributes. The tuned material models are used to run full phase simulations using 2D Electron Backscatter Diffraction (EBSD) data from steel and 10% Mg-PSZ zirconia composites. Form these simulations, dislocation glide, martensitic transformation, stress evolution, and dislocation pinning in different stages of deformation are qualitatively discussed for the steel matrix and ceramic inclusions.

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Mathematical‐physical model of resistance sintering with current conducting electrode punches of steel ceramic composites

Cited by 3 publications

References 4 publications

Microstructure and Local Strain Fields in a High‐Alloyed Austenitic Cast Steel and a Steel‐Matrix Composite Material after in situ Tensile and Cyclic Deformation

Microstructure and Local Strain Fields in a High‐Alloyed Austenitic Cast Steel and a Steel‐Matrix Composite Material after in situ Tensile and Cyclic Deformation

Flow Curve Modelling of an Mg-PSZ Reinforced TRIP-matrix-composite

Modeling the Local Deformation and Transformation Behavior of Cast X8CrMnNi16-6-6 TRIP Steel and 10% Mg-PSZ Composite Using a Continuum Mechanics-Based Crystal Plasticity Model

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