Victorian debutant Scott Boland produced the spell of a lifetime as Australia secured an Ashes series victory with an emphatic triumph over England in the third Test at the MCG on Tuesday.

England were skittled for a feeble 68 as Australia clinched an unassailable 3-0 series lead with victory by an innings and 14 runs inside two days and one session.

Player of the Match Boland was the story of the third day, claiming four wickets in 11 deliveries including England skipper Joe Root to finish with remarkable second-innings figures of 7-6 from four overs.

Root offered the only resistance with 28, after the visitors resumed at 31-4 but wilted against a hungry Australian attack.

Mitchell Starc (29-3) got the first breakthrough of Ben Stokes bowled for 11, before Boland took over as England lost their final five wickets for eight runs.

Boland first trapped Jonny Bairstow lbw for 5, despite a review, after he was dropped at gully by Cameron Green.

The debutant proceeded to claim the key wicket of Root caught by David Warner at first slip, before dismissing Mark Wood and Ollie Robinson for ducks.

Green claimed the final wicket to secure the series victory, clean bowling Jimmy Anderson to bowl England out for 68, their ninth lowest total in Ashes history.

England lasted only 15.4 overs on the third day, with the game being the shortest completed Test match hosted by Australia in 70 years, lasting 1084 balls.