摘要
对60mmE级船板的热轧态和正火后的试样进行相应的时效冲击试验，结果表明，正火后的E级船板，从表面至心部组织一致，晶粒细小且均匀分布，-40℃时效冲击合格，且时效敏感系数较小，低温时效性能得到了显著的提高。并对正火处理后的E级船板的间隙原子C、N的分布，位错的变化及组织演化对时效性能的影响进行了初步的分析和讨论。
The appropriate ageing impact test is made for the samples of 60 mm E grade shipbuilding steel as hot roiled and after normalizing. The results show that the E grade shipbuilding steel possess homogeneous microstructure and fine grain from surface to matrix, ageing impact at -40℃ on compliance, lesser ageing sensitive coefficient, significantly improving the low temperature ageing impact property. And the influence of such factors as the distribution of the interstitial atoms C and N, the dislocation variety , the microstructure evolution on the ageing property for E grade shipbuilding steel afer normalizing is analyzed and discussed.
出处
《热处理技术与装备》
2010年第4期43-46,50,共5页
Heat Treatment Technology and Equipment
关键词
正火
船板钢
时效冲击性能
normalizing, shipbuilding steel, ageing impact property
