赵海东, 刘佳兴, 张朝磊, et al. A Study on Austenite Grain Growth Behaviour of High Strength 23MnNiMoCr54 Link-Chain Steel for Mining[J]. Special Steel, 2021, 42(2): 10-13.
赵海东, 刘佳兴, 张朝磊, et al. A Study on Austenite Grain Growth Behaviour of High Strength 23MnNiMoCr54 Link-Chain Steel for Mining[J]. Special Steel, 2021, 42(2): 10-13.DOI:
The research results show that the coarsening temperature of austenite grains of 23MnNiMoCr54 link-chain steel is 900℃
in order to avoid “mix grain phenomena" occured
the opitmum austenitizing temperature of steel is 850 ℃ for 30 min. Austenite grains grow exponentially with the increase of heating temperature from 850
℃
to 1100℃ for same holding time. The relationship between the average austenite grain size and holding time conforms to Beck model at the same heating temperature
the grain growth index (n) first decreases and then increases with increase of temperature. The austenitic grain growth model D=2.105 xl0
3
t
0.138
exp( -5.18 x 10
4
/RT)。 for 23MnNiMoCr54 link-chain steel at 950 ~ 1250 °C is obtained by fitting in Arrhenius formula.