摘要
根据溶质晶界偏聚理论和原子扩散原理研究了2.25Cr-1Mo钢服役12年后磷晶界偏聚行为及脱脆处理工艺。采用俄歇电子能谱实验对溶质原子的晶界偏聚程度进行了测试分析。结果表明:对于已脆化的2.25Cr-1Mo钢,存在临界脆化温度,且脆化程度越高,临界脆化温度越低;高于临界脆化温度数小时的保温即可消除脆化现象,即2.25Cr-1Mo钢的脱脆速率远大于脆化速率。
Grain boundary segregation behavior of phosphorus and de-embrittled treatment process for 2.25Cr-1Mo steel served 12 years were investigated in terms of the grain-boundary segregation and atomic diffusion theory. The segregation degree of phosphorus was tested by virtue of Auger electron spectrum. The results show that there is a critical embrittlement temperature corresponding to 2.25Cr-lMo steel embrittled, and the critical embrittlement temperature will decrease as the embrittlement degree increases. Furthermore, the embrittlement can restore to its original state in a few hours at the temperature higher than the critical embrittlement temperature. That is, de-embrittlement rate is much faster than embrittlement rate for 2.25Cr-lMo steel.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2014年第10期59-64,共6页
Journal of Materials Engineering
基金
国家自然科学基金资助项目(51175143)
河北省教育厅青年基金项目(QN20131104)
邯郸市科技局科技支撑项目(1321120082)
关键词
脱脆
2.25CR-1MO钢
晶界偏聚
磷
de-embrittled
2.25Cr-lMo steel
grain boundary segregation
phosphorus
作者简介
（1983-），男，博士，讲师，硕士生导师，主要从事高温合金材质脆化及失效机理的研究，联系地址：河北省邯郸市光明南大街199号河北工程大学装备制造学院（056038），E-mail：xlzhang@he-beu．edu．cn．com
