用弯曲韧度作为评定HPC混凝土韧性主要指标之一，研究改善其韧性的措施。
A flexural toughness was taken as one of major parameters to evaluate toughness of high performance concrete (HPC) in the experimental research.
室温冲击韧度随时效时间的延长整体下降，为韧性断裂；
Room temperature impact ductility decreased with the aging time increasing.
发现材料的晶内偏析和奥氏体晶界洁净度分析控制钢的屈服强度和韧度。从而改变了此钢按细化晶粒度控制强韧性的工艺指导思想。
It is found that the alloying elements segregation in grains and the grain boundary cleanliness control the yield stress value and the tough-strength properties of this material respectively.
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