【摘要】 研究了 2 0Mn2Si1VB空冷贝氏体钢在高温奥氏体化后冷却速度对显微组织和力学性能的影响。结果表明 ,该钢在 80 0℃～ 5 0 0℃获得贝氏体组织的平均冷却速度为 0 5℃ /s～ 10 0℃ /s ;随冷却速度不同 ,贝氏体组织中所含粒状贝氏体、无碳化物贝氏体和低碳下贝氏体的含量也不相同 ,但其对强度和塑性影响不大更多还原

【Abstract】 The effect of cooling rate on microstructure and mechanical properties of 20Mn2Si1VB bainite steel after austenization was studied in this paper.The results show that the average cooling rate of the bainite microstructure at 800℃～500℃ are 0 5℃/s～10 0℃/s.The component of granular bainite,carbide free bainite and low carbon lower bainite in the bainite varies with different cooling rate.However,the cooling rate has a little influence on the strength and the plastic behaviour.更多还原