Grade of titanium and titanium alloy and classification of metallographic structure after annealing

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.