The Terrapins (15-11, 7-8) got 16 points from Delvona Oliver. Kalika France scored 13 of her 15 points in the second half.
The crowd of 13,446 at Comcast Center was the second-largest in ACC women's basketball history.
Beard scored 12 first-half points and Duke used a 15-0 run midway through the half to take a 38-21 lead at the break. Maryland missed its first five shots from the field and finished the opening half 8-for-28.
Oliver had six points in a 14-7 run that trimmed Duke's lead to 53-41 with 11:45 remaining. France scored nine straight points to get Maryland to 57-50 with 7:36 left.
But Currie hit consecutive field goals for an 11-point lead.
Chrissy Fisher made a three to get Maryland to 66-59 with 2:16 left, but Vicki Kraphol responded with a three of her own to put the game away.
Photo courtesy of the Associated Press Photo Archive