Methods for thermally treating glass articles

A method for thermally treating glass articles, the method comprising:

• heating a glass article to a treatment temperature equal to an annealing temperature of the glass article ±15° C. at a first heating rate HR1, the glass article having a pre-treatment hydrolytic titration value prior to thermally treating;
• holding the glass article at the treatment temperature for a holding time greater than or equal to 5 minutes;
• cooling the glass article from the treatment temperature through a strain point of the glass article at a first cooling rate CR1 less than 0° C./min and greater than −20° C./min such that a density of the glass article is greater than or equal to 0.003 g/cc after cooling, wherein |HR1|>|CR1|;
• and
• cooling the glass article from below the strain point at a second cooling rate CR2, wherein |cR2>|CR1|, the glass article having a post-treatment hydrolytic titration value after thermally treating, wherein the pre-treatment hydrolytic titration value is greater than the post-treatment hydrolytic titration value.