Beta titanium alloy
Beta titanium alloys are high-strength titanium alloys with a body-centered cubic (BCC) structure. They are well suited for cold forming processes and achieve high strengths through age hardening. These alloys are frequently used in the aerospace industry for fasteners and springs.
Physical-chemical mechanism of action
Beta titanium alloys have a body-centered cubic (BCC) structure, which increases their hardness and strength. These alloys are stable at high temperatures and can be deformed well without the structure changing.
Metallurgical relevance & risks in welding
Beta titanium alloys are prone to cracking and deformation if cooled too quickly. The high hardness can lead to severe hot cracking if the weld is not cooled properly. It is important to ensure a controlled cooling rate to keep the structure unchanged.
Workshop practice & action instructions
When welding beta titanium alloys, use a slow cooling rate and avoid rapid cooling phases. The optimal cooling time is typically between 10 and 20 seconds per millimeter of weld thickness. Make sure the environment is cooler than the weld pool to ensure continuous cooling.