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 vi