yeah
The Fiendfyre killed him and destroyed the entire Room of Requirement before he could escape.
[13] None of the students who escaped (except for Malfoy and Goyle) saw his death, and the others presumed that it killed him, as no one saw him leave the room. Ironically, his use of Fiendfyre also destroyed
Ravenclaw's Diadem, one of Voldemort's
Horcruxes, due to the destructive power of the spell.
Ron reflected that such an action might have made him feel sorry for Crabbe's death if he hadn't been trying to kill them when he used it.