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Microstructural Characteristics of Cement-Based Materials Fabricated Using Multi-Mode Fiber Laser
Youngjin Seo1, Dongkyoung Lee1, Sukhoon Pyo2
1Department of Mechanical and Automotive Engineering, Kongju National University, Cheonan 31080, Korea.
Materials (Basel, Switzerland)
|January 26, 2020
Summary
Laser cutting cement-based materials offers a novel fabrication method, revealing distinct Material Removed Zones and Heat Affected Zones. Silicate content significantly influences laser cutting quality and microstructural changes.
Area of Science:
- Materials Science
- Construction Engineering
- Laser Material Processing
Background:
- Cement-based materials are ubiquitous in construction.
- Conventional cutting methods can cause micro-cracks and material loss.
- Laser cutting presents a potential alternative for fabricating cement-based materials.
Purpose of the Study:
- To evaluate the microstructural effects of laser cutting on cement-based materials.
- To investigate the influence of laser cutting speed, water-to-cement ratio, and material composition.
Main Methods:
- Experimental study involving laser cutting of cement-based materials.
- Microstructural analysis using Scanning Electron Microscopy/Energy Dispersive X-Ray (SEM/EDX).
- Observation of Material Removed Zone (MRZ) and Heat Affected Zone (HAZ).
Main Results:
- Distinct MRZ and HAZ were observed after laser interaction.
- The glassy layer in the MRZ thickens with increased silicate-based materials.
- Material composition, specifically silicate content, impacts laser cutting quality.
Conclusions:
- Laser cutting alters the microstructure of cement-based materials.
- Silicate-based material content is a critical factor in achieving desired laser cutting outcomes.
- Further research into optimizing laser parameters and material composition is warranted.
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