← Glossary

Crack initiation

Crack initiation is the formation of microscopic cracks in the material. It begins with changes in the microstructure and can take a long time.

Physical-Chemical Mechanism of Action

Crack initiation occurs when the material forms microscopic cracks under mechanical loading or chemical environmental attack. This can be caused by stress concentrations, damage, or chemical reactions.

Metallurgical Relevance & Welding Risks

Crack initiation can lead to microvoids and cracks that can grow into larger cracks later in the material's life. This increases the risk of fracture or failure under load.

Shop Practice & Action Guidelines

To minimize crack initiation, it's important to precisely control welding parameters like temperature and stress. Use appropriate shielding and make sure the surface of the material being welded is clean.

MetallurgieSchweißtechnik

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