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 (2): 29-30.

• 试验研究 • 上一篇    下一篇

热处理对DT300低合金超高强度钢组织和性能的影响

赵  磊1,2,  刘宪民2,雍岐龙1,2,  王春旭2   

  1. 1昆明理工大学材料与冶金学院,昆明650093;
    2钢铁研究总院结构材料研究所,北京100081
  • 收稿日期:2006-09-25 出版日期:2007-04-01 发布日期:2023-03-09
  • 作者简介:赵磊(1980-),男,硕士研究生,低合金高强度钢的组织和性能。

Effect of Heat Treatment on Structure and Properties of Low Alloying Ultra-high Strength Steel DT300

Zhao   Lei1,2, Liu   Xianmin2, Yong   Qilong1,2,Wang   Chunxu2   

  1. 1 School of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093;
    2 Institute for Materials. Central Iron and Steel Research Institute, Beijing 100081
  • Received:2006-09-25 Published:2007-04-01 Online:2023-03-09

摘要: 试验和分析了840-960℃油淬的DT300钢(%:0.33C、1.78Si、0.76Mn、5.78Ni、1.10Cr、0.65Mo、0.12V)的马氏体转变和ε-碳化物的析出以及淬火温度对300℃回火后钢的机械性能的影响。结果表明,DT300钢经860-920℃1 h油淬+300℃2 h回火可获得较完全的板条马氏体和优良的强韧性(Rm 1 860 MPa, Rp0.2 1 500 MPa, A 12%, Aku2 58 J) 。

Abstract: Martensite transformation and s- carbide precipitation in the steel DT300 -0.33C,1.78Si,0.76Mn, 5.78Ni,1. 10Cr,0.65Mo,0. 12V oil quenched at 840~960 ℃ and effect of quenching temperature on mechanical properties of 300 ℃ tempered steel have been tested and analyzed. Results showed that complete lath martensite and excellent strength-toughness of steel DT300 were obtained by 860~920 ℃1 h oil cooling + 300 ℃ 2 h tempering. The mechanical properties of heat-treated steel were Rm 1860 MPa, Rp0.21500 MPa,A 12% and Aku2 58 J.