Effects of Ti on Hardenability of Boron-bearing Track Steel
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摘要: 以转炉冶炼不同Ti成分含硼履带钢为材料,通过末端淬火试验和显微组织观察,研究了Ti对含硼履带钢淬透性的影响。结果表明:当Ti/N<5.2时,钢的淬透性随Ti/N的增加而增强;当5.2<Ti/N<7.3时,钢的淬透性随Ti/N的增加基本保持不变;当Ti/N>7.3时,钢的淬透性随Ti/N的增加而减弱。Ti加入量以4.0<Ti/N<8.0为宜,加入量过少不能完全固定钢中的氮,加入量过多则会增加形成大块TiN的几率。Abstract: In this paper the effects of Ti on the hardenability of boron-bearing track steel had been inves-tigated through Jominy end quench test and microstructure observation. It is found out that when Ti/N ra-tion is less than 5.2, the hardenability of boron steel increase with Ti/N increasing. The hardenability keep constant under condition of 5.2
7.3, the hardenability will decreases with increasing Ti/N. The suitable Ti addition should be controlled at 4.0 -
Key words:
- track steel /
- hardenability /
- titanium /
- boron /
- Ti/N
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