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Al Matrix Composites Reinforced by Ti and C Dedicated to Work at Elevated Temperature
Bartosz Hekner1, Jerzy Myalski1, Patryk Wrześniowski1
1Faculty of Materials Engineering Krasińskiego 8, Silesian University of Technology, 40-019 Katowice, Poland.
Materials (Basel, Switzerland)
|July 2, 2021
Summary
This study evaluates aluminium matrix composites (AMC) for high-temperature applications. Heat treatment affects phase composition and microstructure, influencing the overall properties of Al-Ti-C composites.
Area of Science:
- Materials Science
- Metallurgy
- Composite Materials
Background:
- Aluminium matrix composites (AMC) are candidates for high-temperature applications.
- Understanding their behavior under thermal stress is crucial for material design.
- The specific Al-Ti-C composite system requires detailed investigation.
Purpose of the Study:
- To evaluate the applicability of Al-Ti-C composites under high-temperature working conditions.
- To describe the behavior of these composites based on microstructural and phase composition changes.
- To analyze the impact of heat treatment on the composite's properties.
Main Methods:
- Investigating Al-Ti-C composites heated at 540 °C and 600 °C for 2–72 hours.
- Analyzing microstructural and phase composition changes.
- Observing the protective role of the titanium layer on carbon reinforcement.
Main Results:
- Heat treatment significantly alters phase compositions, including Al4C3 limitation and AlTi3 creation.
- Microstructural evolution was observed during thermal exposure.
- The titanium layer effectively protected the carbon reinforcement from aluminum contact.
Conclusions:
- Al-Ti-C composites show potential for high-temperature applications.
- Heat treatment is a critical factor influencing the phase composition, microstructure, and properties of these composites.
- The protective titanium layer is essential for maintaining desired phase equilibria.
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