Classification of titanium alloys according to the data, there are many classification methods. The more common one is to classify according to the metallographic structure after annealing:
1. After annealing, the basic structure is a phase, which is called type a titanium alloy;
2. After annealing, the basic structure is A+B, but mainly a phase, which is called near A-type alloy;
3. After annealing, the basic phase A+B is similar, which is called A+B alloy. It can also be called a equiaxed + B transformation or a primary equiaxed + B transformation or a primary equiaxed + a widmanstatten + B residue;
4. After annealing, it is basically phase B, but there is a certain phase a, which is called near B-type alloy;
5. After annealing, it is basically all B-phase, which is called B-type alloy.
