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 ›› 2009, Vol. 30 ›› Issue (2): 66-67.

• 组织和性能 • 上一篇    下一篇

回火温度对轧后直接水淬15CrMoV钢组织和力学性能的影响

关 婧1,蔡庆伍1,武会宾1,焦多田1,刘小林2,冉 旭1   

  1. 1. 北京科技大学高效轧制国家工程研究中心,北京 100083;
    2. 新余钢铁有限责任公司,新余 338001;
  • 收稿日期:2008-09-29 出版日期:2009-04-01 发布日期:2022-12-05
  • 作者简介:关婧(1984-),女,硕士研究生,耐热钢热处理与组织研究
  • 基金资助:
    国家自然基金资助项目(50671016)

Effect of Tempering Temperature on Structure and Mechanical Properties of Steel 15CrMoV Direct-Water-Quenched after Finishing Rolling

Guan Jing1 , Cai Qingwu1 , Wu Huibin1 , Jiao Duotian1 , Liu Xiaolin2 ,  Ran Xu1   

  1. 1. National Engineering Research Center for Advanced Rolling Technology,University of Science and Technology,Beijing 100083;
    2. Xinyu Iron and Steel Co Ltd,Xinyu 338001;
  • Received:2008-09-29 Published:2009-04-01 Online:2022-12-05

摘要: 试验用钢15CrMoV(%:0.15C、0.29Si、0.57Mn、1.01 Cr、0.37Mo、0.24V)16 mm板材的终轧温度为900~950℃,轧后在880~900℃水淬,并经670~800℃回火。结果表明,试验钢在线淬火后的组织为马氏体+贝氏体,随回火温度升高,钢中碳化物析出量增加,贝氏体板条束逐渐合并和减少,最终转化为碳化物+多边形铁素体组织;在730~780℃回火,15CrMoV钢具有良好的综合力学性能,抗拉强度680~760 MPa,冲击功55~130 J。

关键词: 15CrMoV钢, 在线淬火, 回火, 贝氏体

Abstract: Finishing rolling temperature of 16 mm plate of test steel 15CrMoV(%:0.15C,0.29Si,0.57Mn,  1.01Cr,0.37Mo,0.24V)was 900~950 ℃,then the rolled plate was direct-water-quenched at 880~900 ℃,and tempered at 670~800& ℃.Results showed that the structure of test steel after in-line quenching was martensite + bainite,with increasing tempering temperature,amount of precipitated carbides increased,and bainite lath was gradually merged and finally transferred to carbide + polygonal ferrite structure; with tempered at 730~780 ℃,the steel 15CrMoV had excellent comprehensive mechanical properties with tensile strength 680~760 MPa and impact energy 55~130 J.

Key words: Steel 15CrMoV, In-line Quenching , Tempering, Bainite