Titanium Microalloying
Titanium microalloying reduces grain growth and improves mechanical properties in thermally stressed areas. It protects against uncontrolled microstructural changes.
Physical-chemical mechanism of action
Titanium microalloying works by titanium binding to the metal, which prevents grain growth and improves mechanical properties. This is achieved by controlling precipitation and binding processes in the weld pool.
Metallurgical relevance & risks when welding
Without titanium microalloying, the grain can grow uncontrollably in thermally highly stressed areas, leading to loss of toughness and increased susceptibility to cracking. This can cause cracks and deformations in the welded component.
Workshop practice & instructions
Use titanium microalloying for thermally highly stressed weld joints to control grain growth. The recommended titanium concentration is typically between 0.1% and 0.5%. Ensure that the melting temperature and cooling rate are optimally set to achieve the desired microstructure properties.