the oxygen precipitation fraction after high temperature annealing at 1050C for 4, 16, 64, and 99 h following various 750C preanneal times. The oxygen converted fraction,, is defined as
Results
Oxygen precipitation behavior.—The four graphs in Fig. 1 show the dependence of the oxygen precipitation fraction after high temperature annealing at 1050C for 4, 16, 64, and 99 h following various 750C preanneal times. The oxygen converted fraction,, is defined as