← Glossary
Hydrogen Embrittlement
Hydrogen embrittlement is the penetration of hydrogen into the metal lattice under tensile stress, leading to brittle material failure.
Physico-chemical mechanism of action
Hydrogen embrittlement occurs when hydrogen atoms accumulate in the metal lattice and move under tensile stress. This can lead to sudden failure or brittleness.
Metallurgical relevance & risks in welding
Hydrogen embrittlement increases susceptibility to cracking and brittle failure, especially in highly stressed components. It can result from insufficient deoxidation or excessive temperature differences during welding.
Workshop practice & instructions
Use high-quality shielding gases like argon or helium to avoid hydrogen embrittlement. Ensure the weld cools well and no incomplete fusion remains. For highly stressed parts, special welding methods like gas welding should be used.
MetallurgieSchweißtechnik