Table 5.2 -- Lattice Parameters From CBED Measurements Alloy Aging Temp./Time Phase* Measured Ratio a/b RSR 197 As Solution Heat Treated and Quenched GP 1.0 ASQ, Aged 760 C 1 hr GP 1.06 100 hr GP 1.08 ASQ, Aged 870 C 1 hr GP 1.0 100 hr GP 1.06 RSR 209 As Solution Heat Treated and Quenched ASQ, Aged 760 C 10 hr GP .90 100 hr GP .92 .94 ASQ, Aged 870 C 100 hr GP .90 .90 RSR 185 ASQ GP .91 .98 G 1.23 *Gp gamma prime G gamma Lattice Parameter 3.573 3.577 3.578 3.573 3.577 3.566 3.567 3.569 3.566 3.566 3.567 3.572 3.584 162