ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2007, Vol. 28 ›› Issue (1): 19-20.

• 试验研究 • 上一篇    下一篇

铜含量对超高强度低碳贝氏体钢力学性能的影响

宋新莉1, 郭爱民2,  袁泽喜1,  唐金权2,  董汉雄2   

  1. 1武汉科技大学高温陶瓷与耐火材料湖北省重点实验室,武汉430081;
    2武汉钢铁集团公司,武汉430080
  • 收稿日期:2006-05-19 出版日期:2007-01-01 发布日期:2023-01-12
  • 作者简介:宋新莉(1973-),女,讲师,硕士,2004年毕业于华中科技大学,钢的强韧性研究。

Effect of Cu Content on Mechanical Properties of Ultra High Strength Low Carbon Bainitic Steel

Song  Xinli1,  Guo  Aimin2,  Yuan Zexi1,  Tang Jinquan2,Dong Hanxiong2   

  1. 1 Hubei Province Key Laboratory of Ceramics and Refractories,Wuhan Univerity of Science and Technology,Wuhan 430081;
    2 Wuhan Iron and Steel Group Company,Wuhan 430080
  • Received:2006-05-19 Published:2007-01-01 Online:2023-01-12
  • Supported by:


摘要: 实验用低碳贝氏体钢(%:0.042~0.045C、1.43~1.47Mn、1.0~2.5Cu、0.29~0.30Mo、0.025~0.029Nb、0.011~0.018Ti,0.0013~0.0023B)由50 kg真空感应炉冶炼。实验结果表明,随铜含量由1.0%增加至 2.5%,8-Cu在钢中沉淀速度加快,峰值硬度增大;随Cu%的增加,轧后直接淬火(DQ)钢的屈服强度由865 MPa增 至918 MPa, DQ+500℃回火钢的屈服强度由935 MPa增至1140 MPa,但1.0%~2.5%Cu DQ+500 ℃回火钢的抗 拉强度和冲击韧性均比DQ态钢有所降低。

关键词: 超高强度, 低碳贝氏体,  ε-Cu沉淀 , 力学性能

Abstract: Test low carbon bainitic steel (0.042~0.045C,1.43~1.47Mn,1.0~2.5Cu,0.29 ~0.30Mo, 0.025~0.029Nb,0.011~0.018Ti,0.0013~0.0023B) was melted by a 50kg vacuum induction furnace. Teat results showed that with increasing Cu content from 1.0% to2.5%,the precipitation speed of e-Cu in steel and the peak hardness increased; and with increasing Cu%, the yield strength of direct-quenching(DQ)steel after rolling increased from 865 MPa to918 MPa and the yield strength of DQ + 500 ℃ tempering steel increased from 935 MPa to1140 MPa, while the tensile strength and impact toughness of DQ+500 ℃ tempering1.0~2.5Cu steel were lower than that of DQ steel.