12Cr1MoV钢连续冷却过程中P的晶界偏聚

材料热处理学报, 2003, 24(4): 33-36. doi: 10.3969/j.issn.1009-6264.2003.04.007

12Cr1MoV钢连续冷却过程中P的晶界偏聚

杨尚林 ^1, , 李莉 ^2, , 田无边 ^3, , 杨亚卓 ^4, , 李庆芬 ^5,

1.哈尔滨工程大学,机电工程学院,黑龙江,哈尔滨,150001

2.哈尔滨工程大学,机电工程学院,黑龙江,哈尔滨,150001

3.哈尔滨工程大学,机电工程学院,黑龙江,哈尔滨,150001

4.哈尔滨工程大学,机电工程学院,黑龙江,哈尔滨,150001

5.哈尔滨工程大学,机电工程学院,黑龙江,哈尔滨,150001

基金项目: 国防科工委基础科研项目(J1600E001) 国家自然科学基金(59971042)

关键词：分步冷却 , 连续冷却 , 晶界偏聚 , 等效时间 , 临界时间

Segregation of P at Grain-boundary of 12CrlMoV Steel in Continuous Cooling Process

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4.1 at%,相应的理论计算等效时间te(813K)=42.558h时,P在晶界的偏聚量为4.4 at%,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.

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材料期刊网

12Cr1MoV钢连续冷却过程中P的晶界偏聚

Segregation of P at Grain-boundary of 12CrlMoV Steel in Continuous Cooling Process

参考文献