Martina Koukolíková

ORCID: 0000-0002-6161-6832
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About
Contact & Profiles
Research Areas
  • Additive Manufacturing Materials and Processes
  • Additive Manufacturing and 3D Printing Technologies
  • High Entropy Alloys Studies
  • Welding Techniques and Residual Stresses
  • Metal Alloys Wear and Properties
  • Microstructure and Mechanical Properties of Steels
  • Titanium Alloys Microstructure and Properties
  • Metal and Thin Film Mechanics
  • High Temperature Alloys and Creep
  • Metallurgy and Material Forming
  • Manufacturing Process and Optimization
  • Aluminum Alloy Microstructure Properties
  • Aluminum Alloys Composites Properties
  • Nuclear Materials and Properties
  • Microstructure and mechanical properties
  • Intermetallics and Advanced Alloy Properties
  • Bone Tissue Engineering Materials
  • Powder Metallurgy Techniques and Materials
  • Advanced materials and composites
  • Material Properties and Applications
  • Material Selection and Properties
  • Laser and Thermal Forming Techniques
  • Hydrogen embrittlement and corrosion behaviors in metals
  • Fatigue and fracture mechanics
  • Metal Forming Simulation Techniques

Comtes Fht (Czechia)
2016-2024

Functionally graded materials (FGM) are a very promising group of technical materials. The potential FGM was increased recently by Additive manufacturing (AM) techniques. This is due to the possibility automatisation entire process and achievable variable material structure controlled deposition parameters. defects unexpected formation crucial for performance additively manufactured components. Conventional compositionally multi-material systems characterised horizontally oriented interfaces...

10.1080/17452759.2022.2073793 article EN Virtual and Physical Prototyping 2022-05-12

The creep properties of a laser-directed energy deposition (L-DED) technique manufactured Inconel 718 (IN718) was investigated at 650 °C/700 MPa. Microstructure and L-DED IN718 samples were tailored by various post heat treatments involving homogenization treatment with temperature ranging from 1080 to 1180 °C + double aging hot isostatic pressing (HIP). Microstructural changes their influence on the behavior fracture mechanism observed discussed. results show that sample treated simple...

10.3390/ma16041377 article EN Materials 2023-02-06

The microstructural morphology in additive manufacturing (AM) has a significant influence on the building structure. High-energy concentric heat source scanning leads to rapid heating and cooling during material deposition. This results unique microstructure. size of microstructure have strong directionality, which depends laser power, rate, melt pool fluid dynamics, thermal properties, etc. grain structure significantly affects its resistance solidification cracking mechanical properties....

10.3390/ma14185129 article EN Materials 2021-09-07

Continuous cooling transformation (CCT) diagrams are widely used when heat treating steels and represent which type of phase will occur in a material as it is cooled at different rates. CCT constructed on the basis dilatometry measurements relatively small testing samples (cylindrical shape with diameter 4mm length 11 mm this study). The main aim work was to demonstrate possibility evaluating tensile test properties using mini-tensile tests from miniature volumes (1.4 × 10-7 m3 for one...

10.3390/ma15093076 article EN Materials 2022-04-23

Manganese twinning induced plasticity (TWIP) steels are attractive materials for the automotive industry thanks to their combination of strength and excellent toughness. This article deals with basic microstructural mechanical properties sheet metal two heats low-carbon medium-manganese steel different aluminium levels. Microstructure observation was carried out using optical scanning electron microscopy. Electron backscatter diffraction (EBSD) X-ray were used phase analysis. In an...

10.3390/met8040263 article EN cc-by Metals 2018-04-12

Additive manufacturing (AM) becomes a more and standard process in different fields of industry. There is still only limited knowledge the relationship between measured material data overall behaviour directed energy deposition (DED)-processed complex structures. The understanding structural performance, including flow curves local damage properties additively manufactured parts by DED, increasingly important. DED can be used for creating functional surfaces, component repairing using...

10.3390/ma15030806 article EN Materials 2022-01-21

In the present study, effect of material deposition at elevated temperature baseplate on microstructure and mechanical properties was investigated correlated to unique thermal history by using numerical simulation. Numerical results agreed well with experimental properties. revealed a significant decrease in gradient 40% stress due baseplate. The reduced resulted coarser grain features, which turn led hardness tensile strength, especially for bottom region near Meanwhile, no could be found...

10.3390/ma15124165 article EN Materials 2022-06-12
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