(中國科學(xué)院 金屬研究所， 沈陽 110015)
摘 要: 綜述了磷對鐵鎳基變形合金的影響及機理。簡述了磷的性質(zhì)，來源及冶煉控制。介紹了磷的凝固偏析及對合金凝固過程的影響與機理。以微量元素對晶界能、晶界擴散和晶界結(jié)合力的影響機理為基礎(chǔ)，比較并分析了磷對合金組織結(jié)構(gòu)和力學(xué)性能的各種影響機制。
關(guān)鍵字: 微量元素； 磷； 鐵鎳基合金
（The Institute of Metal Research, Chinese Academy of Science,
Shenyang 110015, P.R.China）
Abstract: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.
Key words: trace element; P; Fe-Ni based alloy
