The multitude of complex reactions described in

this dissertation are mostly explicable based on

the results from the application of these

methods. Convergent beam diffraction is shown

to have sufficient sensitivity to measure the

relative lattice parameter differences between

the gamma prime phases of the two RSR alloys.

These meaurements compare favorably with x-ray

diffraction measurements. Convergent beam

diffraction is also shown to be a powerful but

limited method for measuring strains in

micro-volumes of material.