Classification of titanium and three matrix organization

Medical titanium plate is allotrope, a melting point of 1668 ℃, when less than 882 ℃ It showed a close-packed hexagonal lattice structure called α titanium; body-centered cubic lattice structure at 882 ℃ or more were called β titanium. The use of the different characteristics of the two titanium structure, add the appropriate alloying elements, so that the phase transition temperature and relative content of gradual change and get different organizations alloy (titanium alloys). At room temperature, medical grade titanium There are three basic body tissue, titanium will be divided into the following three categories: α alloy, (α + β) alloys and β alloys. Chinese, respectively TA, TC, TB represents.
α Titanium

Medical grade titanium alloy is a single-phase alloy consisting of α-phase solid solution, either at ambient temperatures or at higher temperatures the practical application, are the α-phase, organizational stability wear resistance higher than pure titanium, a strong antioxidant capacity. At a temperature of 500 ℃ ~ 600 ℃, and maintains its strength and creep resistance, but can not be heat strengthened, strength at room temperature is not high.
β titanium

It is a single-phase alloy consisting of β-phase solid solution,
Titanium alloy dagger
Titanium alloy dagger
That did not have a high intensity heat treatment, quenching and aging alloy has been further strengthened, the room temperature strength of up to 1372 ~ 1666 MPa; but poor thermal stability, and should not be used at high temperatures.