摘要
采用中碳含量+微合金Nb、Ti设计以及控轧控冷工艺在实验室轧制出屈服强度550 MPa级热轧桥壳试验钢。研究结果表明,试验钢中加入适量稀土Ce元素,对钢的组织及强度影响不明显,稀土Ce降低了试验钢B类夹杂物的评级,加稀土试验钢低温冲击功明显优于不加稀土试验钢的冲击功,稀土Ce改善了桥壳试验钢的疲劳性能。
The 550 MPa grade hot rolled axle housing test steel is rolled in laboratory with the design of medium carbon content+micro alloy Nb and Ti as well as controlled rolling and controlled cooling process. The results showed that the effects of adding moderate rare earth Ce into test steel on its microstructure and strength were not obvious, rare earth Ce reduced the grade of inclusion(class B) in test steel, low temperature impact energy of test steel with rare earth was obviously better than that of test steel without rare earth and fatigue property of axle housing test steel was improved by rare earth Ce.
作者
郭冬青
王少炳
惠鑫
Guo Dong-qing;Wang Shao-bing;Hui Xin(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)
出处
《包钢科技》
2022年第3期35-38,42,共5页
Science & Technology of Baotou Steel
关键词
桥壳试验钢
稀土Ce元素
夹杂物
冲击韧性
疲劳韧性
axle housing test steel
rare earth Ce
inclusion
impact toughness
fatigue toughness