MELBOURNE (AFP) - Serena Williams shook off form worries to storm into the Australian Open final Thursday and immediately declared herself ready to join the elite club of players with 10 Grand Slam titles. Second seed Williams rediscovered her lethal serve as she overpowered Russia's Elena Dementieva 6-3, 6-4 in the semi-finals to bring the fourth seed's 15-match winning streak to a juddering halt.The win means Williams will contest the 13th Grand Slam decider of her career against Russian third seed Dinara Safina.It gives the American the chance to join legends such as Steffi Graf, Chris Evert and Martina Navratilova in the elite group of women with 10 or more Grand Slams. "It would be cool ... hopefully I'll be a part of the club," she said.The three-time Australian champion could also continue a sequence of winning runs in odd-numbered years at Melbourne Park, with her previous victories coming in 2007, 2005 and 2003. The 27-year-old fired down 10 aces against Dementieva and moved freely as her game at last came together on the Rod Laver Arena, where the roof was closed as Melbourne's worst heatwave in a century continued. The American's performance repeated the pattern she has followed at previous Grand Slams - where she lacks focus and plays poorly in early rounds then lifts her game towards the business end of the tournament. She said she had doubts about whether the improvement she was chasing would arrive at this year's tournament, where her form has been patchy. "I definitely did, especially after my second round," said Williams, who has struggled in the heat. "I just really wasn't playing well at all. I just wasn't bringing it. I thought that I was just going to have to not complain and just do whatever it takes to win." Instead it was Dementieva's game which fell apart, with the Russian committing eight double faults in the second set and screeching in frustration as attempts at winners went wide. "She was very powerful today," said Dementieva, who has now failed to reach a final after reaching four Grand Slam semis. "I was maybe not aggressive enough and not playing deep enough, which allowed her to be very aggressive and dictate the game," added the 27-year-old, who is yet to win a Grand Slam in 41 attempts. Dementieva set out to attack Williams' serve but failed to convert two break point opportunities in the first game when her backhand let her down. Williams gave her no more opportunities in a tightly-contested first set, where no player could pull ahead until the sixth game, when Dementieva held Williams to love for the first time. It served as a warning to the American and she stepped up her aggression in the next, hitting a venomous forehand down the line to make it 4-3, going on to break Dementieva in the next. It proved a turning point as Williams comfortably held serve against the increasingly frustrated Russia. Dementieva regathered early in the second set, snatching her first break of the match in third game then defending her serve to go up 3-0. Williams then fell heavily in the fifth game but showed no ill effects and was soon back on level terms as Dementieva's serving woes returned. Her mistakes were proving decisive, with eight double faults from the Russian in the high-pressure second set. The Russian knocked off her own sun visor reaching for a return in the eighth game when she gained a break only to have Williams break back in the next then send down two aces as she served out the match.