← Glossary

Isothermal time-temperature transformation

A diagram showing phase transformations at constant temperature. It helps in precise control of heat treatment processes.

Physical-Chemical Mechanism of Action

The isothermal time-temperature transformation (TTT) diagram shows how metals change through various phases at constant temperature. For example, austenite can transform to ferrite and pearlite.

Metallurgical Relevance & Risks in Welding

Incorrect TTT curves can lead to undesirable microstructures that are finer and increase hardness. This can cause cracks and breakage in the material.

Shop Practice & Instructions

Use TTT diagrams for precise control of heat treatment. Ensure that temperature is kept constant and time is correctly observed. If problems occur, check the diagram and adjust processes.

MetallurgieSchweißtechnik

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