The role of hydrogen , nitrogen, carbon , boron, titanium plates in

The maximum solubility of oxygen in the β titanium is about 1.8% (6.0 atomic% ) , appeared in 1740 ℃. Titanium oxide in a solution of up to 6.8% maximum (18 atomic% ) , in the range of 900 ~ 1740 ℃. Below 900 ℃, when the alloy content exceeds 2.8% oxygen (8% atom ) , then turn compounds Ti6O, Ti3O, TiO , etc. appear. Titanium and oxygen interactions are reversible.

The maximum solubility of nitrogen in the β titanium was 1.9 % in 2020 ℃ + -25 ℃. Titanium in a nitrogen solid solution of about 6.85% maximum , in 1000 ~ 2350 ℃. There are two kinds of compounds : titanium stockists ε -phase and δ -phase . ε compound phase is based Ti4N or Ti3N phase , tetragonal lattice has a complex , a = 4.92 Å , c = 5.61 Å , c / a = 1.05. δ -phase TiN is based compounds. Interaction of titanium and nitrogen is irreversible .

The maximum carbon solid solution of β titanium is 0.8 % in 1750 + -20 ℃. A maximum degree of solid solution of carbon in titanium is 0.48 % in 920 + -3 ℃. Degree of solid solution of carbon in titanium or a titanium β are reduced with the temperature decrease . Titanium - the only one carbon-based compound phase , δ phase , which is a compound of the TiC -based .

The maximum solid solubility of boron in the β titanium is about 0.1% in 1670 + -25 ℃. The maximum solubility of boron in a titanium is approximately 0.05% , appeared in 886 + -4 ℃. The role of boron and titanium compounds can be generated Ti2B, TiB, TiB2 and Ti2B5 ,titanium standard parts the main compounds are TiB.