Turkey's first gold puts the country second in the medals table alongside Serbia and Russia, but South Korea are out in front with three golds.
President Recep Tayyip Erdoğan congratulated Askari.
Also, another Turkish athlete Zeliha Ağrıs advanced to the semi-finals after beating Egyptian rival Radwa Abdelkader, securing a medal. Elsewhere, Olympic silver medalist Lutalo Muhammad will also be in action today for the first time since his agonizing defeat in the 80kg final at Rio 2016. The 26-year-old Briton is hoping to claim his first medal at a World Championships.
In the women's under-53 kg, Turkey have a chance of a second gold when Zeliha Agris meets Dinorahon Mamadibragimova of Uzbekistan. Inese Tarvisa of Latvia takes on Russia's Tatiana Kudashova.