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Phase Equilibrium and Microstructure Examinations of Eutectic Fe-C-Mn-B Alloys
Mykhaylo Pashechko1, Oleksandr Tisov2
1Faculty of Mechanical Engineering, Politechnika Lubelska, Nadbystrzycka Str. 36, 20-618 Lublin, Poland.
Researchers explored the Fe-C-Mn-B system to develop new eutectic cast alloys for additive manufacturing and coating. They identified broad eutectic concentrations, crucial for stable manufacturing processes.
Area of Science:
- Materials Science
- Metallurgy
- Additive Manufacturing
Background:
- Eutectic cast alloys are essential for advanced manufacturing applications.
- The Fe-C-Mn-B system offers potential for novel alloy development.
Purpose of the Study:
- To analyze the quaternary Fe-C-Mn-B system for new eutectic cast alloys.
- To investigate alloy suitability for coating deposition and additive manufacturing.
Main Methods:
- Wire arc additive manufacturing with argon shielding.
- Vacuum furnace annealing at 1273 K for 350 h.
- Phase analysis using Jeol Superprobe 733, metallography, and differential thermal analysis.
Main Results:
- Several eutectic alloys were identified within the Fe-C-Mn-B system.
- Four isothermal pseudo-ternary sections were analyzed.
- Broad eutectic concentrations were found, beneficial for manufacturing parameter stability.
- Two distinct phase regions (Fe-C-B and Fe-C-Mn ternary) and two solid solution types ((Fe, Mn)α or (Fe, Mn)γ) were determined.
Conclusions:
- The Fe-C-Mn-B system supports the creation of eutectic alloys suitable for additive manufacturing.
- Understanding phase regions and solid solution formation is key to optimizing alloy properties for specific applications.
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