Abstract
The mechanical properties and microstructure of superplastic materials are summarized, together with the principles involved in obtaining material in a superplastic condition. Examples of development of superplasticity in existing commercial Ni, Ti, and Cu alloys are given, and it is demonstrated how superplastic steels may be designed. Typicalformed components in IN 100 and IMI 318 alloys are shown and the advantages of superplastic forming are discussed briefly.