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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Isakov, Matti
Tampere University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2024Dynamic plasticity of metalscitations
- 2024In-situ synchrotron X-ray diffraction study of the effects of grain orientation on the martensitic phase transformations during tensile loading at different strain rates in metastable austenitic stainless steelcitations
- 2024In-situ synchrotron X-ray diffraction study of the effects of grain orientation on the martensitic phase transformations during tensile loading at different strain rates in metastable austenitic stainless steelcitations
- 2023Microscale Strain Localizations and Strain-Induced Martensitic Phase Transformation in Austenitic Steel 301LN at Different Strain Ratescitations
- 2023In situ damage characterization of CFRP under compression using high-speed optical, infrared and synchrotron X-ray phase-contrast imagingcitations
- 2023In situ damage characterization of CFRP under compression using high-speed optical, infrared and synchrotron X-ray phase-contrast imagingcitations
- 2023In-Situ X-ray Diffraction Analysis of Metastable Austenite Containing Steels Under Mechanical Loading at a Wide Strain Rate Rangecitations
- 2023Large-Scale Fatigue Testing Based on the Rotating Beam Methodcitations
- 2022Crystal plasticity modeling of transformation plasticity and adiabatic heating effects of metastable austenitic stainless steelscitations
- 2022Strain Hardening and Adiabatic Heating of Stainless Steels After a Sudden Increase of Strain Ratecitations
- 2022Effects of strain rate on strain-induced martensite nucleation and growth in 301LN metastable austenitic steelcitations
- 2021The effect of local copper mesh geometry on the damage induced in composite structures subjected to artificial lightning strike ; Artificial lightning strike onto composite structures - effect of local mesh geometrycitations
- 2021Some aspects of the behavior of metastable austenitic steels at high strain rates
- 2021The effect of local copper mesh geometry on the damage induced in composite structures subjected to artificial lightning strikecitations
- 2020Low-cycle impact fatigue testing based on an automatized split Hopkinson bar devicecitations
- 2020The effect of strain rate on the orientation of the fracture plane in a unidirectional polymer matrix composite under transverse compression loadingcitations
- 2020Evaluation of the strain rate dependent behavior of a CFRP using two different Hopkinson bars
- 2019Adiabatic Heating of Austenitic Stainless Steels at Different Strain Ratescitations
- 2019Fracture toughness measurement without force data – Application to high rate DCB on CFRPcitations
- 2019Uncoupling the effects of strain rate and adiabatic heating on strain induced martensitic phase transformations in a metastable austenitic steelcitations
- 2018Effects of adiabatic heating estimated from tensile tests with continuous heatingcitations
- 2018Strain rate jump tests on an austenitic stainless steel with a modified tensile Hopkinson split barcitations
- 2017Characterization of Flame Cut Heavy Steelcitations
- 2017Experimental fatigue characterization and elasto-plastic finite element analysis of notched specimens made of direct-quenched ultra-high-strength steelcitations
- 2016The effect of initial microstructure on the final properties of press hardened 22MnB5 steelscitations
- 2016Iterative Determination of the Orientation Relationship Between Austenite and Martensite from a Large Amount of Grain Pair Misorientationscitations
- 2015Effect of Strain Rate on the Martensitic Transformation During Plastic Deformation of an Austenitic Stainless Steelcitations
- 2014Sedimentation stability and rheological properties of ionic liquid-based bidisperse magnetorheological fluidscitations
- 2012Strain Rate History Effects in a Metastable Austenitic Stainless Steel
Places of action
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article
The effect of initial microstructure on the final properties of press hardened 22MnB5 steels
Abstract
<p>This paper addresses the relationship between initial microstructure and final properties of press hardened 22MnB5 steels. Four commercial 22MnB5 steels having different initial microstructures were investigated. An experimental press hardening equipment with a flat-die was used to investigate material behavior in the direct press hardening process. Two austenitizing treatments, 450 s and 180 s at 900 °C, were examined. Microstructural characterization with optical and scanning electron microscopes revealed a mixture of martensite and auto-tempered martensite after press hardening. Electron backscatter diffraction data of the transformed martensite was used to reconstruct grain boundary maps of parent austenite. Grain sizes of parent austenite (mean linear intercept) were measured for each material. In addition to microstructural evaluation, quasistatic and high strain rate tensile tests at strain rates of 5×10<sup>−4</sup> s<sup>−1</sup> and 400 s<sup>−1</sup>, respectively, were performed for press hardened samples. The results show that strength and uniform elongation depend on the initial microstructure of the 22MnB5 steel, when parameters typical to the direct press hardening process are used. Parent austenite grain size was shown to influence the morphology of the transformed martensite, which in turn affects the strength and uniform elongation after press hardening. The tensile properties of the press hardened materials are almost strain rate independent in the studied strain rate range. The obtained results can be used to optimize the properties of 22MnB5 steels in the direct press hardening process. In addition, the here revealed connection between the parent austenite grain size and final steel properties should be taken into account in the development of new press hardening steel grades for automotive industry.</p>