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 ›› 2010, Vol. 31 ›› Issue (3): 59-61.

• 组织和性能 • 上一篇    下一篇

热压缩变形403Nb叶片钢的静态再结晶行为

宁小智1,王立民1,邢长军1,刘正东1,杨钢1,卢伦2,吕成林2   

  1. 1钢铁研究总院结构所,北京100081 ;
    2抚顺特殊钢股份有限公司技术中心,抚顺113001 ;
    3哈尔滨船舶锅炉涡轮机研究所燃气轮机研究室,哈尔滨150036
  • 收稿日期:2009-11-05 出版日期:2010-06-01 发布日期:2022-11-07
  • 作者简介:宁小智(1981-),男,硕士,助理工程师,钢铁冶金和性能研究。
  • 基金资助:
    国家自然科学基金重点项目资助(50634030)

Behavior of Static Recrystallization of Hot-Compressed Steel 403Nb for Blade

Ning Xiaozhi1 , Wang limin1 , Xing Changjun1 , Liu Zhengdong1 , Yang Gang1 , Lu Lun2 , Lu Chenglin3   

  1. 1 Institute for structural Material, Central Iron and Steel Research Institute, Beijing 100081 ;
    2 Technical Center, Fushun Special Steel Co Ltd, Fushun 113001 ;
    3 Gas Department, Harbin Marine Boiler and Turbine Research Institute, Harbin 150036
  • Received:2009-11-05 Published:2010-06-01 Online:2022-11-07

摘要: 通过Gleeble-3500热模拟试验机对403Nb马氏体钢(%:0.16C、11.98Cr、0.03Mo、0.22Nb、0.01V、0.12Ni)在950~1 150℃进行应变速率0.01~10 s-1,道次间隔1~100 s的二道次热压缩试验。通过总结已发表的各种静态再结晶数学模型,得出403Nb钢静态再结晶激活能Qrex为168.40 kJ/mol及静态再结晶模型t0.5=6.599 9×10-10ε-1.6ε-0.46 d0 exp(168400/RT)。结果表明,热压缩道次间隔时间短,钢的晶粒粗大,静态再结晶率低;道次间隔时间长,静态再结晶接近完成,大部分为等轴晶粒;在热压缩过程中,剪应变最大的区域再结晶最完全,晶粒最细小。

关键词: 403Nb叶片钢, 热压缩, 静态再结晶

Abstract: Double passes hot-compression test of martensite steel 403 Nb (% : 0. 16C, 11. 98Cr, 0. 03Mo, 0. 22 Nb, 0. 01V, 0. 12Ni) with internal time between passes 1 ~ 100 s and strain rate 0. 01 ~ 10 s-1 at 950 ~ 1 150 °C has been carried out by using Gleeble-3500 thermal simulator. With summarizing established different static recrystallization math models, it is obtained that the activation energy Qrex of static recrystallization of steel 403 Nb is 168. 40 kJ/mol, die static recrystallization model is t0.5=6.599 9×10-10ε-1.6ε-0.46 d0exp( 168 400 /RT). Results show that with short internal time, the steel grain size coarsens and the static recrystallization rate decreases ; with longer internal time, the static recrystallization is nearly completed with most equiaxial grains. During hot compression, the static recrystallization is almost completed with finest grains in the region with maximum shear strain.