The semi-final 2d leg was closer than the scoreline counseled, but Inter ultimately were comfortable winners on combination after a goalless draw inside the first fixture.
Simone Inzaghi's guys will take on the winners of Wednesday's different semi-final, which Juventus lead 1-zero after the primary leg, on the Stadio Olimpico on May eleventh.
AC Milan stay with out a main trophy when you consider that winning the 2011 Serie A title, however the Scudetto is still up for grabs this season.
Stefano Pioli's men lead Inter via two factors in the desk, despite the fact that the reigning champions have a game in hand.
Inter Milan made a dream begin on Tuesday as they struck within the first four minutes.
Matteo Darmian's dinked move discovered its manner to Martinez, and the Argentinian slammed a volley into the top corner to score his 18th goal of the season in all competitions.
AC Milan ultimately burst into lifestyles across the 1/2-hour mark, with Inter goalkeeper Samir Handanovic having to make clever saves from Rafael Leao and Alexis Saelemaekers.
They almost levelled again twice in brief succession five minutes before half-time, as Ivan Perisic by some means scrambled the ball off the line with his chest, earlier than Leao's attempt changed into kept out by means of Handanovic's legs.
But Inter sprung straight up the opposite quit to double their advantage in opposition to the run of play, as Joaquin Correa played a adorable thru ball into the path of Martinez, who coolly chipped the ball over advancing goalkeeper Mike Maignan.
