Elongation at elevated temperature

Superplasticity is macroscopically defined as the ability of a polycrystalline material to exhibit large elongations at elevated temperatures and relatively low stresses. It is commonly found in a wide range of materials from metals to ceramics (bioceramics or high-temperature superconductors, among others) when the grain size is small enough a few micrometres for metals and less than a micron in ceramics. 

Tensile strength and break elongation at elevated temperatures are given in Table 3.12. All the listed compounds retain excellent tensile properties at above room temperature. 

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