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 ›› 2008, Vol. 29 ›› Issue (1): 4-6.

• 试验研究 • 上一篇    下一篇

高合金钢Vanadis4凝固过程及组织

颜  飞1, 史海生2 , 樊俊飞2 , 徐 洲1   

  1. 1 上海交通大学教育部高温材料及高温测试重点实验室,上海200030;
    2宝钢技术中心,上海201900
  • 收稿日期:2007-07-26 出版日期:2008-02-01 发布日期:2022-12-13
  • 作者简介:颜 飞(1979-),男,博士生,2001年武汉科技大学毕业,主要从事模具钢组织性能研究。 ​

Solidification Process and Structure of High Alloy Steel Vanadis4

Yan    Fei1,  Shi    Haisheng2,  Fan    Junfei2 ,  Xu    Zhou1   

  1. 1 key Laboratory for High Temperature Materials and Test of Ministry of Education,Shanghai Jiaotong University,Shanghai 200030;
    2 Technical  Center,Baosteel,Shanghai 201900
  • Received:2007-07-26 Published:2008-02-01 Online:2022-12-13
  • Supported by:
    上海宝钢集团“十五”重大项目资助(BG010102)

摘要: 通过激光扫描共焦显微镜、X射线衍射、扫描电镜、电子探针、微区成分能谱分析和差示扫描量热法,研究了高合金Vanadis4(V4)模具钢(%:1.5C、8.0Cr、1.5Mo、4.0V)的凝固过程及其微观组织。结果表明,V4钢基体为马氏体和残余奥氏体,基体中碳化物主要为MC与M7C3型。杆状、棒状或团块状VC分布在晶界。该钢在凝固时,首先发生结晶过程L→γ从液相中析出初生γ相,随着γ相不断析出,剩余液相中合金元素含量不断富集,达到共晶成分后将先后发生L→γ+MC与L→γ+M7C3共晶反应。

关键词: Vanadis4钢, 组织, 凝固过程, 激光扫描共焦显微镜,

Abstract: The solidification process and structure of high alloy steel Vanadis4(V4)- 1.5C, 8.0Cr, 1.5Mo, 4.0V have been investigated by laser scanning confocal microscope,X-ray difraction,SEM,electron probe micro analyzer,en- ergy dispersive X-ray spectrometer and differential scanning calorimetry. Results showed that the matrix of steel V4 consis- ted of martensite and retained austenite with main carbides MC and M7C3.The Carbide VC with shape of pole,stick and block was distributed at grain boundary.The crystallization process L→γ first occurred during solidification of the steel to precipitate primary γ phase,with increasing γ phase the alloy elements continuously were enriched in remained liquid,with liquid reaching eutectic,composition,the eutectic reactions,CL→γ+MC and L→γ+M7C3 ocncfuorcrld in seoqsuccee.

Key words: steel Vanadis4, structure, solidification process, laser scanning confocal microscope