Table 5.2 -- Lattice Parameters From CBED Measurements


 Measured Ratio
Alloy Aging Temp./Time Phase* a/b Lattice Parameter

RSR 197 As Solution Heat
 Treated and Quenched GP 1.0 3.573

 ASQ, Aged 760 C
 1 hr GP 1.06 3.577
 100 hr GP 1.08 3.578

 ASQ, Aged 870 C
 1 hr GP 1.0 3.573
 100 hr GP 1.06 3.577

RSR 209 As Solution Heat
 Treated and Quenched- -

 ASQ, Aged 760 C
 10 hr GP .90 3.566
 .92 3.567
 100 hr GP .94 3.569
 .90 3.566

 ASQ, Aged 870 C
 100 hr GP .90 3.566
 .91 3.567
RSR 185 ASQ GP .98 3.572
 G 1.23 3.584
*Gp gamma prime
G gamma