微量元素磷在铁镍基变形高温合金中的作用  

Effect of trace P on Fe-Ni based wrought superalloy

作　　者：胡壮麒[1] 孙文儒[1] 郭守仁[1] 卢德忠[1] 

机构地区：[1]中国科学院金属研究所,沈阳110015

出　　处：《中国有色金属学报》2001年第6期947-959,共13页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目 ( 5 980 10 135 99710 6 0 )

摘　　要：综述了磷对铁镍基变形合金的影响及机理。简述了磷的性质 ,来源及冶炼控制。介绍了磷的凝固偏析及对合金凝固过程的影响与机理。以微量元素对晶界能、晶界扩散和晶界结合力的影响机理为基础 ,比较并分析了磷对合金组织结构和力学性能的各种影响机制。The effects and mechanisms of phosphorus on Fe Ni based wrought superalloys are reviewed. The property and source of phosphorus, and its control during the melting of alloys are briefly depicted. The segregation of phosphorus and its effects on the solidification of alloys are considered. Three types of changes due to the addition of trace elements are described: energetic (lowering of surface energy), kinetic (changing diffusivities), mechanical (weakening the interface). Accordingly, the various mechanisms by which phosphorus influencing the microstructure and mechanical properties of alloys are outlined and discussed by comparison.

关 键 词：微量元素 磷 铁镍基合金 变形高温合金 

分 类 号：TG132.32[一般工业技术—材料科学与工程] TG142.73[金属学及工艺—合金]