QP钢增强增韧机理及生产工艺研究
Research on Strengthening and Toughening Mechanism and Production Process of QP Steel
许伟超1
作者信息
- 1. 邯钢能嘉钢铁有限公司,河北 邯郸 056300
- 折叠
摘要
利用新一代高强度、高塑性钢铁材料M3组织调控思路,开展QP钢成分设计,并研究确定其生产工艺.结果表明:基于C-Si-Mn-Nb成分体系,采用640℃下均热10 min,60 ℃淬火后450 ℃回火配分3 min的退火工艺,可获得1 000 MPa级以上QP钢;通过提Mn加Nb,在950～1 150 ℃温度范围内拉坯时,可在保证QP钢具有良好断面收缩率的同时,更易避免铸坯内部和表面裂纹的形成.
Abstract
Using the new generation of high-strength and high plasticity steel material M3 microstructure control ideas,QP steel composition design is carried out,and its production process is studied and determined.The results show that based on the C-Si-Mn-Nb composition system,the annealing process of uniformly heating at 640 ℃ for 10 minutes,quenching at 60 ℃,and tempering at 450 ℃ for 3 minutes can obtain QP steel with a strength of over 1 000 MPa.By adding Mn and Nb,it is possible to avoid the formation of internal and surface cracks in QP steel during casting at temperatures ranging from 950 to 1 150 ℃ while ensuring good cross-sectional shrinkage.
关键词
QP钢/组织调控/强韧化机制/断面收缩率Key words
QP steel/organizational regulation/strengthening and toughening mechanism/cross-sectional shrinkage rate引用本文复制引用
出版年
2024
NETL
NSTL
万方数据