5. Transformation

5.1 Homogenization

The first step before processing consists of homogenization (high-temperature heat treatment), which has two objectives:

the dissolving of intermetallic phases resulting from solidification in the inter-dendritic zones and detrimental to the metal's use;
diffusion of alloying elements between the dendritic and inter-dendritic zones.

For both these reasons, this homogenization stage is carried out at high temperatures, allowing harmful phases to be brought into solution. In addition, in order to obtain sufficient diffusion of the alloying elements, this stage must last a relatively long time (24 to 72 h). This treatment is followed by slow cooling to...

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Cast superalloys

Bibliography

(1) - KRACKE (A.) - Superalloys, the most successful alloy system of modern times – Past, present and future. - 7 ^th International symposium on superalloys 718 and Derivatives, p. 13, TMS (The minerals, Metals and Materials Society) (2010).
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Events

International Symposium on Superalloys. Seven Springs. USA. International conference on superalloys, held every 4 years. TMS (The minerals, Metals and Materials Society) http://www.tms.org

International Symposium on Superalloys 718 and Derivatives. Pittsburgh, USA. Conference on 718 superalloys and derivatives held every 4 years in the United...