论文部分内容阅读
研究了Cu-P-Cr-Ni-Mo耐候钢中铁素体晶粒在压缩过程中的细化机制。结果表明,当应变速率为0.01 s-1时,在750℃的应变温度下,铁素体转变量随应变量的不断增加而逐步增大;当应变量达到0.69以后,铁素体转变量基本不再继续增加。当ε=1.2,试验温度在750~850℃之间时,铁素体转变量随热压缩温度降低逐渐增大,其晶粒尺度不断变小。连续动态再结晶是试验钢中铁素体晶粒细化的主要机制。
The refinement mechanism of ferrite grains in Cu-P-Cr-Ni-Mo weathering steel during compression was studied. The results show that when the strain rate is 0.01 s-1, the amount of ferrite transformation gradually increases with the increase of strain at a strain temperature of 750 ℃. When the amount of strain reaches 0.69, the amount of ferrite transformation No longer continue to increase. When ε = 1.2 and the test temperature is between 750 and 850 ℃, the ferrite transformation temperature gradually decreases with the decrease of the hot compression temperature, and the grain size decreases continuously. Continuous dynamic recrystallization is the main mechanism of grain refinement of ferrite in the test steel.