通过金相观察和萃取复型的方法，研究了X80管线钢在不同加热温度下奥氏体晶粒长大规律及第二相粒子的溶解规律。结果表明：随加热温度升高，奥氏体晶粒逐渐长大，当温度达1150℃时，晶粒急剧增大；当加热温度达到1200℃时，铌的碳氮化物几乎全部溶解于基体中。
The grain growth behavior of austenite and the solid solution regularity of second phase particles for X80 pipeline steel at different heating temperature were investigated by means of metallographic observation and extraction replicas. The results show that the grain size of austenite increased with the increasing of temperature, and the grain size increases rapidly at 1150 ℃. The niobium carbonitride almost dissolved in the matrix at the heating temperature of 1 200 ℃.
参考文献
| [1] | 亓效刚,陈茂爱,陈俊华.微合金钢第二相粒子对HAZ区奥氏体晶粒影响[J].材料科学与工艺,2005(04):368-371. |
| [2] | 许洪汛,唐荻,江海涛,田志强,马小亮.X80管线钢组织性能研究[J].新技术新工艺,2008(09):76-78. |
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