Читать книгу Welding Metallurgy - Sindo Kou - Страница 79

There are many applications for weld thermal simulators. For instance, a weld thermal simulator can be used in conjunction with a high‐speed dilatometer to help construct continuous‐cooling transformation diagrams useful for studying phase transformations in welding and heat treating of steels.

By performing high‐speed tensile testing during weld thermal simulation, the elevated‐temperature ductility and strength of metals can be evaluated. This is often called the hot‐ductility test. Nippes and Savage [64, 65], for instance, used this test to investigate the HAZ fissuring in austenitic stainless steels.

Charpy impact test specimens can also be prepared from specimens (1 cm by 1 cm in cross section) subjected to various thermal cycles. This synthetic‐specimen or simulated‐microstructure technique has been employed by numerous investigators to study the HAZ toughness.