Sorry - no I'm afraid it isn't possible to set the default sort ordering for files to be chronological.
As it looks like you may have discovered, the "solution" to this is to ensure that the filename has the date in it too, e.g.,
2015-03-16 Minutes.doc
2015-03-23 More Minutes.doc
That way when it is sorted alphabetically it will be in date order.
Thanks
Joe - Voice Admin
Thanks I should have thought it through really but got there in the end
Joe