Abstract：The annealing process mechanism of the hot- rolled austenitic stainless steel strip was analysed in detail. The results show that in order to prevent carbide, σ phase from precipitating and δ- ferrite from being broken, the strip must be heated rapidly between 500- 870℃ in annealing process, at the heating speed from 10- 31℃/s. Then the temperature would remain above 1020℃ for more than 11s. In this process, the strip was recrystallized and became fully soft, the carbide and σ phase also dissolved fully, and the content of δ- ferrite reduced to minimum. After that, the strip was cooled rapidly between 870- 500℃, and the cooling rate was from 38- 100℃/s. This cooling process could effectively prevent the dissolved carbides and σ phase from precipitating again.
2015, Vol. 25 
