(化學)材料科學的問題!!急!!!

Cite three metallurgical/processing techniques that are
employed to enhance the creep resistance of metal alloys.

Three metallurgical/processing techniques that are employed
to enhance the creep resistance of metal alloys are

1) solid solution alloying
2) dispersion strengthening by using an insoluble second
phase
3) increasing the grain size or producing a grain structure with
a preferred orientation.