示波冲击曲线与断口形貌和硬度以及组织有良好的对应关系，是韧性分析的有效方法之一。
Oscilloscope Charpy impact curve corresponds well with fractographic characteristic, hardness curve and the microstructures, therefore is the effective toughness analyzing method.
针对精炼与非精炼船钢低温冲击值的差异，分析了两种钢的化学成分、夹杂物和显微组织等对冲击值的影响。
For the difference of ship steel low temperature impact value, the effects of chemical composition, inclusion and microstructure of the refined and unrefined steel are analyzed.
通过对冲击韧性的测试结果与微观组织的分析，确定出使焊缝冲击韧性最佳的焊接工艺参数。
Meanwhile the optimal welding parameter which was suitable for welding line impact toughness was gained by analysis on the test result of impact toughness and microstructure.
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