GR5 (Ti-6Al-4V) Titanium alloy is a -type Titanium alloy developed by the United States in 1954. It contains 6% stable element Al and 4% stable element V. The main characteristic of GR5 Titanium alloy is that it has excellent comprehensive performance and good process characteristics, and the service temperature is 350 ℃. The alloy is widely used and its output is nearly half of the total production of Titanium alloy.
BT9 Titanium alloy is a kind of -Titanium alloy with good comprehensive performance. It has excellent thermal strength under 500 ℃ and high room temperature strength. The alloy also has good thermal processing properties (including conventional process properties and superplasticity), and can be welded and machined in various ways. At present, with the expansion of BT9 Titanium alloy applications, the alloy heat treatment and isothermal forging have obtained rapid development.
Ti6242 is a near type Titanium alloy with nominal composition of Ti-6Al-2Sn-4Zr-2Mo, containing stable element Al, neutral elements Sn and Zr, isocrystalline stable element Mo, and eutectoid stable element Si. Mo can improve the tensile strength at room temperature and high temperature and enhance the stability. The combined action of Al, Sn and Zr can maintain the high temperature strength of creep for a long time. The addition of Si will lead to the deposition of the dispersed phase of silicide, which is helpful to improve the creep strength at high temperature. The alloy is also of high strength at 540 ℃, with a maximum long-term working capacity of 500 ℃
