0Cr13Ni8Mo2Al 钢在900～1050 ℃时的变形组织演变规律研究
Investigation on Deformation Microstructure Evolution of 0Cr13Ni8Mo2Al Steel at 900～1050 ℃
舒小勇1, 鲁世强1, 刘大博2, 金建军2
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作者单位：(1. 南昌航空大学 材料科学与工程学院, 江西 南昌 330063; 2. 北京航空材料研究院, 北京 100095)
中文关键字：0Cr13Ni8Mo2Al钢；组织演变；动态再结晶
英文关键字：0Cr13Ni8Mo2Al steel; microstructure evolution; dynamic recrystallization
中文摘要：采用Gleeble热模拟试验机，在变形温度900～1050 ℃和应变量0～0.69条件下对原始等轴组织的0Cr13Ni8Mo2Al钢进行等温恒应变速率(10 s-1)压缩试验，研究了0Cr13Ni8Mo2Al钢变形组织的演化规律。结果表明，在本实验变形条件下，0Cr13Ni8Mo2Al钢在变形过程中没有发生完全再结晶，只发生部分再结晶。当应变量小于0.29时，再结晶非常少；当应变量达到0.29后，再结晶明显增多。当变形温度为900～1000 ℃时，平均晶粒尺寸随温度的变化较小；在1000～1050 ℃时，平均晶粒尺寸随温度的变化较大。当应变小于0.29时，平均晶粒尺寸明显地随应变增大而减小；当应变达到0.29时，平均晶粒尺寸缓慢地随应变增大而减小。
英文摘要：Isothermal compression test with constant strain rate(10 s-1) was employed to investigate the microstructure evolution of 0Cr13Ni8Mo2Al steel at the temperatures of 900 ℃～1050 ℃ and the strain range of 0～0.69 by Gleeble simulator. The results show that, under experimental conditions, full recrystallization of 0Cr13Ni8Mo2Al steel does not occur, only partial recrystallization occurs. The amount of recrystallized grains is a little when the strain is below 0.29, but the amount increases obviously after the strain 0.29. The average grain size changes lightly with the temperature at 900 ℃～1000 ℃, while the effect of temperature on grain size is obvious at 1000 ℃～1050 ℃. When the strain is below 0.29, the average grain size decreases obviously with the increase of strain. Nevertheless, after the strain reaches 0.29, the average grain size decreases slowly with the increase of strain.