Memory titanium: the price of this material can be ten times or even tens of times that of pure titanium.
It's a class of titanium alloys, but it's super elastic and it has shape memory. We once made a toy out of memory titanium, a lotus flower. Normal temperature is placed there is closed huagu, a cup of warm water poured up, opened, such as slowly cooling, and closed. The temperature can be set. Shapes can also be set. Compared to beta titanium, memory titanium is far more difficult to process, too elastic to shape at room temperature, and heat treatment of memory titanium is another difficult and even secret process. As for welding, it is also much more difficult than β titanium and pure titanium.
1. Sponge titanium must be recast by electric furnace to become usable titanium ingot, but titanium is very active at high temperature, it is very difficult to process;
2. Pure titanium is soft and generally not suitable for use as titanium products, so it is necessary to add other elements. For example, titanium 64, commonly used in the aerospace industry, is mixed with many other elements to improve the metal properties.
3. Titanium is difficult to machine. It's not really hard, but it's sticky. I filed the ti-64 handle with a file that quickly filled in the lines. It is said that because the speed is low, titanium cannot be cut at all. If the speed is too high, titanium will be oxidized. Ordinary machining centers cannot process titanium alloy products at all.
4. Titanium is even more difficult to make into products. The structure of the product is very fine and requires a lot of fine processing, which is a big challenge for titanium, which is a very difficult material to process. In addition, titanium alloy products also involve titanium alloy welding technology, which is more difficult.
How difficult is the titanium alloy processing technology?
Let's just say that the people in the world who design airplanes, if they can use aluminum through structural optimization, they don't use titanium, because titanium is too hard to make.
