Titanium Additives for Aluminum & Alloy Grain Refinement

Usage of Titanium Additives in Aluminum Alloys

Titanium additives play a crucial role in enhancing the performance of aluminum alloys. Typically introduced in the form of titanium aluminum alloy (Al-Ti) or titanium boron aluminum alloy (Al-Ti-B), these additives are incorporated into aluminum alloy melts. During smelting, it's essential to add the titanium additive to the molten aluminum liquid, stirring thoroughly to ensure even distribution. Depending on the desired properties of the final product, the titanium content usually ranges from 0.1% to 0.2%. For instance, typical cast aluminum alloys contain 0.1%-0.15% titanium, whereas high-strength aluminum alloys may require a higher titanium concentration. The melting temperature is maintained between 700°C and 800°C to ensure complete dissolution of the titanium agent.

Main Advantages of Titanium Additives

• Grain Refinement: Titanium significantly refines the grain structure of aluminum alloys, enhancing both mechanical and processing properties.
• Strength and Hardness: By incorporating titanium, the strength and hardness of aluminum alloys are greatly improved, making them ideal for high-strength applications.
• Corrosion and Heat Resistance: Titanium enhances the corrosion and heat resistance of aluminum alloys, especially useful in marine and high-temperature environments.
• Cost-Effectiveness: Despite the relatively high cost of titanium agents, they offer significant improvements in alloy performance, justifying the investment.
• Environmental Impact: The by-products generated during the smelting process are environmentally harmless.

Packaging and Storage Methods

Proper packaging and storage are crucial for maintaining the quality of titanium agents. Typically, moisture-proof materials such as woven bags or iron barrels lined with plastic bags are used for packaging. Block titanium agents may be packaged directly in pallets or wooden boxes. Store the titanium agents in a dry, well-ventilated warehouse, away from moisture. Avoid exposure to corrosive substances like acids and alkalis and keep them separate from flammable materials. In optimal dry conditions, the shelf life of titanium agents can extend up to six months.

Enhanced Properties of Aluminum Alloys with Titanium

• Grain Refinement: As a prevalent grain refiner, titanium significantly refines the grain structure, improving the mechanical and processing properties of the alloys.
• Increased Strength: Adding titanium enhances the strength of aluminum alloys, making them suitable for demanding applications.
• Corrosion Resistance: Particularly effective in humid and marine environments, titanium enhances the corrosion resistance of aluminum alloys.
• Heat Resistance: Titanium ensures aluminum alloys retain high strength and stability at elevated temperatures, suitable for high-temperature environments.
• Improved Casting Performance: The addition of titanium results in better casting performance, reducing defects and improving casting quality.