Farhad Mostaghimi
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Farhad Mostaghimi has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- Anastasiya Toenjes
Leibniz‐Institute for Materials Engineering ‐ IWT Bremen Germany
1 shared publication - Axel von Hehl
Chair of Materials Science and Materials Testing (LMW), University of Siegen, Siegen, Germany
1 shared publication - Bernd Schob
Department of Lightweight Structures and Polymer Technology, Technical University of Chemnitz, Reichenhainer Str. 31/33, 09126 Chemnitz, Germany
1 shared publication - Frank Schubert
Institute of Lightweight Structures and Polymer Technologies, University of Technology Chemnitz, Reichenhainer Straße 31/33, 09126 Chemnitz, Germany
1 shared publication - Lena Heemann
Leibniz Institute for Materials Engineering—IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
1 shared publication - Lothar Kroll
Department of Lightweight Structures and Polymer Technology Chemnitz University of Technology Chemnitz Germany
1 shared publication
Latest Publications
- Open Access
Adjustment of Mechanical Properties of Medium Manganese Steel Produced by Laser Powder Bed Fusion with a Subsequent Heat Treatment
Medium manganese steels can exhibit both high strength and ductility due to transformation-induced plasticity (TRIP), caused by metastable retained austenite, which in turn can be adjusted by intercritical annealing. This study addresses the laser additive processability and mechanical properties of the third-generation advanced high strength steels (AHSS) on the basis of medium manganese steel using Laser Powder Bed Fusion (LPBF). For the investigations, an alloy with a manganese concentration of 5 wt.% was gas atomized and processed by LPBF. Intercritical annealing was subsequently performed at different temperatures (630 and 770 °C) and three annealing times (3, 10 and 60 min) to adjust the stability of the retained austenite. Higher annealing temperatures lead to lower yield strength but an increase in tensile strength due to a stronger work-hardening. The maximum elongation at fracture was approximately in the middle of the examined temperature field. The microstructure and properties of the alloy were further investigated by scanning electron microscopy (SEM), hardness measurements, X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and element mapping.
Open AccessAdjustment of Mechanical Properties of Medium Manganese Steel Produced by Laser Powder Bed Fusion with a Subsequent Heat Treatment
Medium manganese steels can exhibit both high strength and ductility due to transformation-induced plasticity (TRIP), caused by metastable retained austenite, which in turn can be adjusted by intercritical annealing. This study addresses the laser additive processability and mechanical properties of the third-generation advanced high strength steels (AHSS) on the basis of medium manganese steel using Laser Powder Bed Fusion (LPBF). For the investigations, an alloy with a manganese concentration of 5 wt.% was gas atomized and processed by LPBF. Intercritical annealing was subsequently performed at different temperatures (630 and 770 °C) and three annealing times (3, 10 and 60 min) to adjust the stability of the retained austenite. Higher annealing temperatures lead to lower yield strength but an increase in tensile strength due to a stronger work-hardening. The maximum elongation at fracture was approximately in the middle of the examined temperature field. The microstructure and properties of the alloy were further investigated by scanning electron microscopy (SEM), hardness measurements, X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and element mapping.