微量钛对低碳硼钢冲击韧性的影响

The effect of tiny amount of Titanium on the notch toughness of low carbon boron steel

研究了微量钛对低碳硼钢冲击韧性的影响．结果表明：在－６０℃～＋２０℃范围内，加入微量钛的低碳硼钢的冲击韧性普遍较好，随着温度升高，冲击韧性值增大，但其冲击韧性值变化幅度不大．在－６０℃～＋２０℃范围内，必须的钛含量超出时，这些过剩的钛对低碳硼钢的冲击韧性没有明显影响．

The effect of tiny amount of Titamium on the notch toughness of low carbon boron steel was investigated. The results show that in the temperature ranging from -60℃ to +20℃,the notch toughness of low carbon boron steel with addition of tiny amount of Titanium is generally good, and increases slowly with temparature. When the Titanium addition surpasses certain level, the surplus amount of Titanium has no obvious further inffluence on the notch toughness of the steel. No negative effect of this extra amount Titanium on the notch toughness of the steel was observed.