摘要
通过回火试验，研究了回火温度对高强度容器钢组织结构与力学性能的影响。研究表明：在550～670℃范围内，随着回火温度升高，钢板抗拉强度和屈服强度先增大后减小，延伸率和冲击韧性先减小后增大，这源于索氏体组织和碳化物的共同作用。
The relationship of microcosmic structure and properties of plate in the different tempering temperature conditions is analyzed and it is showed that with the increase of tempering temperature from 550 ℃ to 670 ℃, due to the action togther with Sorbite and Carbide, the plate strength increases first and descends second, on the contrary, the toughness and elongation descends fost and increases second.
关键词
钢板
回火温度
组织
性能
vessel steel
tempering temperature
structure
properties
