碳含量对含钼钢中磷、钼和碳晶界偏聚的影响Effect of Carbon Content on Grain Boundary Segregation of Phosphorus, Molybdenum and Carbon in Mo-bearing Steels
胡静,姜玉仙,林栋樑
摘要(Abstract):
采用俄歇剥层分析测定了经 116 0℃淬火和 40 0~ 6 5 0℃回火的Fe 4Mo 0 1P C钢中磷、钼和碳的晶界偏聚。研究了碳含量对含钼钢中磷、钼和碳晶界偏聚的影响 ,以及碳和磷、碳和钼、磷和钼的交互作用。研究结果表明 ,在含钼钢中提高碳含量可降低在回火脆温度范围内磷的晶界偏聚 ,增加钼的晶界偏聚。碳的晶界偏聚随钢中碳含量的增加而增加。钼和碳、钼和磷具有晶界共偏聚行为 ,而碳和磷却产生相互排斥和 或占位竞争作用
关键词(KeyWords): 可逆回火脆;晶界偏聚;含钼钢;磷;钼;碳
基金项目(Foundation): 国家自然科学基金资助 (598951 50 )
作者(Author): 胡静,姜玉仙,林栋樑
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