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稀土对不同洁净度高碳钢力学性能的影响
引用本文:刘承军,姜茂发,李春龙,陈建军.稀土对不同洁净度高碳钢力学性能的影响[J].东北大学学报(自然科学版),2005,26(11):61-64.
作者姓名:刘承军  姜茂发  李春龙  陈建军
作者单位:1. 东北大学,材料与冶金学院,辽宁,沈阳,110004
2. 东北大学,材料与冶金学院,辽宁,沈阳,110004;包头钢铁集团公司,内蒙古,包头,014010
摘    要:通过实验测定和理论分析,系统研究了稀土在不同洁净度条件下高碳钢中的赋存状态和存量的变化规律,及其对钢的力学性能的影响.研究发现,在钢洁净度大幅度提高的条件下,稀土处理对于高碳钢的力学性能依然有明显的改善作用,而且效果更加稳定.随着钢洁净度的提高,稀土加入量可以适当降低.在本实验高碳钢种条件下,低洁净度钢的稀土最佳加入量的质量分数为0.02%,高洁净度钢的稀土最佳加入量的质量分数为0.01%,此时钢的塑性和冲击韧性得到显著改善.对于低洁净度钢而言,加入大量的稀土并不能增加钢中的固溶稀土含量,固溶稀土的质量分数均保持在0.001 2%以下.

关 键 词:稀土  高碳钢  洁净钢  塑性  冲击韧性  
文章编号:1005-3026(2005)11-1078-04
收稿时间:2005-01-11
修稿时间:2005年1月11日

Effect of Rare Earth on Mechanical Properties of High-Carbon Steel with Different Cleanliness
LIU Cheng-jun,JIANG Mao-fa,LI Chun-long,CHEN Jian-jun.Effect of Rare Earth on Mechanical Properties of High-Carbon Steel with Different Cleanliness[J].Journal of Northeastern University(Natural Science),2005,26(11):61-64.
Authors:LIU Cheng-jun  JIANG Mao-fa  LI Chun-long  CHEN Jian-jun
Institution:(1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) Baotou Iron and Steel Group Corporation, Baotou 014010, China
Abstract:How the state and content of RE vary in high-carbon steel and affect its mechanical properties were studied experimentally and theoretically. It was found that adding RE properly to the steel can improve significantly and stably steel's mechanical properties even if the cleanliness of steel has greatly been enhanced and that the adding amount of RE can properly be reduced along with the increasing cleanliness. Experimental results showed that the plasticity and impact toughness can be improved greatly when the optimum adding amounts of RE are 0.02 and 0.01 wt% to low and high cleanliness steels, respectively. However, adding a large amount of RE can't increase solid RE solution content in low cleanliness steel, which will be kept below 0.0012 wt%.
Keywords:rare earth  high-carbon steel  clean steel  plasticity  toughness
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