5.4 Energy Dispersive X-Ray Measurements....167

 5.5 Microhardness Measurements.............. 167

 6 DISCUSSION AND CONCLUSIONS................... 170

 6.1 Metastable NixMo Phase
 Formation: Effects of Chemistry
 and Microstructure.......................... 170

 6.2 Precipitation in RSR 197................176

 6.3 Precipitation in RSR 209................179

 6.4 Mechanical Response to Aging............179

 6.5 Convergent Beam/X-Ray Diffraction.......181

 6.6 Conclusions.............................183

REFERENCES. .................. .......................... 185

APPENDICES

 A HOLZ PATTERN CALCULATION.....................191

 B INTERPLANAR ANGLES...........................199

BIOGRAPHICAL SKETCH.................................... 201