低碳微合金化含硼冷镦钢的冲击性能  

Impact property of micro-alloyed low carbon cold heading steel containing boron

作　　者：周新龙 陈伟庆[1] 叶飞[1] 刘振清[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]武钢技术中心,武汉430080

出　　处：《北京科技大学学报》2008年第9期1006-1010,共5页Journal of University of Science and Technology Beijing

摘　　要：通过对不同B含量的低碳硼钢和Nb、V微合金化低碳硼钢的冲击实验,研究了B含量及Nb、V微合金化对低碳硼钢冲击性能的影响.结果表明：0.0006%-0.0015%的B将提高热处理状态钢的冲击韧性,B质量分数超过0.003%将降低钢的冲击韧性.Nb、V复合微合金化同时加入适量Al可显著提高热处理状态低碳硼钢的冲击韧性.Ti质量分数超过0.03%对低碳硼钢和微合金硼钢的冲击性能不利.The influences of B content and Nb, V micro-alloying on the impact toughness of low carbon boron steel were investigated by impact tests of low carbon boron steels with different boron contents and of Nb, V micro-alloyed low carbon boron steel. The results show that the B content of 0. 000 6 % to 0. 0015 % can improve the impact toughness of the steel, but the B content more than 0. 003 96 decreases the impact toughness. Nb, V micro-alloying with appropriate Al can increase the impact toughness of the steel, especially after heat treatment. It is disadvantageous that the Ti content is higher than 0.03 % to the impact toughness of low carbon boron steel and micro-alloyed low carbon boron steel.

关 键 词：低碳硼钢 微合金化 冲击性能 硼含量 

分 类 号：TG142.33[一般工业技术—材料科学与工程]