| 12Cr1MoV钢连续冷却过程中P的晶界偏聚 |
| |
| 引用本文： | 杨尚林,李莉,田无边,杨亚卓,李庆芬.12Cr1MoV钢连续冷却过程中P的晶界偏聚[J].材料热处理学报,2003,24(4):33-36. |
| |
| 作者姓名： | 杨尚林 李莉 田无边 杨亚卓 李庆芬 |
| |
| 作者单位： | 哈尔滨工程大学,机电工程学院,黑龙江,哈尔滨,150001 |
| |
| 基金项目： | 国家自然科学基金资助(59971042);国防科工委基础研究资助(J1600E001). |
| |
| 摘 要： | 采用分步冷却工艺，研究了连续冷却过程中12Cr1MoV钢中P的非平衡晶界偏聚过程，实际测得在813K恒温45h时，P在晶界的偏聚量为4．1at％，相应的理论计算等效时问te(813K)=42．558h时，P在晶界的偏聚量为4．4at％，表明实验结果与理论计算值相吻合。从而说明晶界偏聚的等效时间理论能很好地解释分步冷却工艺中P的非平衡晶界偏聚动力学和分步冷却工艺加速脆化的机理。
|
| 关 键 词： | 分步冷却 连续冷却 晶界偏聚 等效时间 临界时间 |
| 文章编号： | 1009-6264(2003)04-0033-04 |
Segregation of P at Grain-boundary of 12CrlMoV Steel in Continuous Cooling Process |
| |
| YANG Shang-lin,LI Li,TIAN Wu-bian,YANG Ya-zhuo,LI Qing-fen.Segregation of P at Grain-boundary of 12CrlMoV Steel in Continuous Cooling Process[J].Transactions of Materials and Heat Treatment,2003,24(4):33-36. |
| |
| Authors: | YANG Shang-lin LI Li TIAN Wu-bian YANG Ya-zhuo LI Qing-fen |
| |
| Abstract: | By step cooling process, the non-equilibrium segregation process of P at grain-boundary of 12Cr1MoV steel in continuous cooling process is investigated. The measured value of segregation of P at grain-boundary is 4\^1 at % for the steel at 813K isothermal holding 45h, and the corresponding calculated result is 4\^4 at % while the effective time is 42\^558h. The results show that the experimental data accords with the calculated result. This indicates the theoretic segregation model at grain-boundary can be used to explain the dynamical segregation process of P at grain-boundary in step cooling process and the mechanism of accelerating embrittlement of step cooling. |
| |
| Keywords: | step cooling continuum cooling grain-boundary segregation effective time critical time |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
