Grain boundary segregation of phosphorus and molybdenum in A533B steel
Grain boundary segregation of phosphorus and molybdenum in A533B steel
复制标题
A533B钢中磷、钼的晶界偏析
DOI：
10.1179/174328405x63953
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发表时间：
2005
影响因子：
1.8
通讯作者：
J. Knott
中科院分区：
文献类型：
--
作者：
R. Ding;T. Rong;J. Knott
采用场发射枪扫描透射电子显微镜（FEGSTEM）结合能谱X射线显微分析，研究了不同热处理工艺下工业级A533B钢中磷、钼在晶界的偏聚。结果表明，随着时效时间的延长，原奥氏体晶界上的P和Mo浓度增加。这遵循姆克林平衡偏析模型的预测，当修改为考虑磷和钼之间的相互作用能时。
Phosphorus and molybdenum segregation to grain boundaries in a commercial grade A533B steel subjected to a variety of heat treatments has been examined using a field emission gun scanning transmission electron microscope (FEGSTEM) with energy dispersive X-ray micro-analysis. The results indicate that P and Mo concentrations at prior austenite grain boundaries increase with aging time. This follows the prediction of McLean's equilibrium segregation model, when modified to take account of the interaction energy between phosphorus and molybdenum.