In this research,the dynamic recrystallization(DRX)behavior of an as-cast precipitation hardenable(PH) stainless steel was investigated by conducting hot compression tests at temperatures between 950-1150℃and under strain rates of 0.001-1 s~(-1).The flow stress curves show that the DRX is responsible for flow softening during hot compression.The effects of temperature and strain rate on the strain and stress corresponding to peak point(ε_p andσ_p)of flow curve were analyzed individually.It is realized that,they increase with strain rate and decrease with temperature.The relationship between Zener-Hollomon parameter(Z)andε_p was investigated and the equation ofε_p=4.3×10~(-4)Z~(0.14)was proposed.The strain for the maximum rate of DRX(ε_(max))was determined under different deformation conditions.Therefore,it is realized that it increases with Z parameter and vise versa.On the basis of obtained results,the equation ofε_(max)=9.5×10~(-4)Z~(0.12)was proposed. In this research, the dynamic recrystallization (DRX) behavior of an as-cast precipitation hardenable (PH) stainless steel was investigated by conducting hot compression tests at temperatures between 950-1150 ° C and under strain rates of 0.001-1 s -1 The flow stress curves show that the DRX is responsible for flow softening during hot compression. The effects of temperature and strain rate on the strain and stress corresponding to peak point (ε_p and σ_p) of the flow curve are analyzed individually. It is realized that , they increase with strain rate and decrease with temperature. The relationship between Zener-Hollomon parameter (Z) and ε_p was investigated and the equation of ε_p = 4.3 × 10 ~ (-4) Z ~ (0.14) was proposed. rate of DRX (ε_ (max)) was determined under different deformation conditions. Where, it is realized that it increases with Z parameter and vise versa. On the basis of obtaining results, equation of ε max = 9.5 × 10 ~ ( -4) Z ~ (0.12) was proposed.