Synthesis of Metal Matrix Composites Based on CrxNiy-TiN for Additive Technology

Area of Science:

• Materials Science
• Metallurgy
• Additive Manufacturing

Background:

• Additive technologies require novel composite materials with enhanced properties.
• Existing materials may not meet the demands for high-performance applications.
• Understanding synthesis-structure-property relationships is crucial for material development.

Purpose of the Study:

• To synthesize and characterize new metal matrix composite materials for additive technologies.
• To investigate the synthesis parameters, structure, and phase composition of CrN + TiNi composites.
• To evaluate the suitability of these composites for direct laser deposition.

Main Methods:

• Self-propagating high-temperature synthesis (SHS) was employed for composite fabrication.
• Analysis of synthesis parameters, structure, and phase composition was performed.
• Microstructural characterization and phase analysis were conducted.

Main Results:

• CrN + TiNi composites were successfully synthesized with a phase composition of 54.6 wt.% CrN and 45.4 wt.% TiNi.
• A composite structure with uniformly distributed titanium nitride (TiN) particles within a CrNi intermetallic matrix was observed.
• TiN particle size ranged from 0.3 to 9 μm, with an average of 2.8 μm.
• The synthesized composites are suitable for direct laser deposition.

Conclusions:

• The study provides fundamental data on the synthesis of CrN + TiNi metal matrix composites.
• These novel composites show potential for additive manufacturing applications.
• The materials may offer increased hardness, operating temperature, and strength.