Only Sophie Devine’s knock for New Zealand against India way back in 2005 was quicker in international T20s, coming off just 18 balls.
Healy’s innings was the Australian opener’s fifth half-century in her past seven T20 innings and she also hit 48 from 29 balls against Pakistan in her first match of the tournament.
Opening partner Beth Mooney was the only Australian wicket to fall against Ireland for 14, while Ellyse Perry finished not out on nine.
Perry had earlier been Australia’s best with the ball, claiming 2-12 as the tournament favourites strangled the minnows in the first innings.
Off-spinner Ash Gardner claimed one scalp, as she turned a ball from the rough well outside off stump to bowl Isobel Joyce.
The Australians celebrate another Irish wicket. Photo: Getty
Ireland was also controversially penalised five runs for Gaby Lewis and Laura Delany running down the centre of the wicket on consecutive balls as a crackdown continues in the tournament.
Adding insult to injury, Lewis was run out on the following ball by Georgia Wareham, again attempting a quick single.
With pitches being used for more than one match, Pakistan was also penalised twice in its loss to India earlier on Monday morning (AEDT).
It gifted India a 10-run advantage at the start of its innings, as it won with an over to spare to stay top of Group B with the Aussies.
-AAP