1.Origin
Al-Ti-C was proposed before Al-Ti-B in the late 1940s and early 1950s and conducted more detailed research. However, due to the poor wettability of C in molten aluminum and the low density of carbon powder, It is easy to float and difficult to react with Ti in the aluminum liquid. So the preparation of Al-Ti-C failed then. Later, it was found that Al-Ti-B was easier to prepare. Thus Al-Ti-B was rapidly developed and promoted.
2.Al-Ti-B Original problem
Factors such as coarse TiB2 particles and its agglomeration have brought various quality problems to many products:
① Cause scratches or stripes on the surface of some aluminum rolling plates, pinholes in the aluminum foil, and damage to the surface of the roll.
② TiB2 agglomeration is easy to precipitate, causing refinement decline, and clogging the filter, affecting the filtering effect.
③ The Zr and Cr elements in some high-strength aluminum alloys can cause the refinement performance of Al-Ti-B to be poisoned, forming coarse grains or uneven structures.
3.Al-Ti-C performance needs to be improved
Nowadays, Al-Ti-C has already achieved mass production, but in practical applications, although Al-Ti-C has various natural advantages, it is often inferior to Al-Ti-B in terms of refinement ability and effective duration.
Further research and development breakthroughs are needed for Al-Ti-C to fully exploit its performance advantages.
4.Our Al-Ti-C breakthrough
① Efficient refinement ability and effective duration;
② It is beneficial to the cleanliness of aluminum alloy melt and improves the metallurgical quality of aluminum alloy products;
③ It can make aluminum alloy ingots obtain uniform crystal grains from the surface to the center, and improve the final use performance of the aluminum products;
④ It can reduce the rate of intergranular corrosion and improve the corrosion resistance of aluminum alloy products;
⑤ It can effectively overcome the refinement "poisoning" and improve the casting quality of high-strength and heat-resistant aluminum alloys.