(1、东北大学压力加工系，沈阳 110006；
2、洛阳有色加工设计院，洛阳 471000)
摘 要: 研究了Al-Ti-B晶粒细化合金中各化合物相TiAl3、TiB2和AlB2对铝晶粒的细化作用。结果表明，TiAl3相是有效形核相，TiB2和AlB2相不能单独作为形核相，B对Al-Ti-B的细化作用有显著影响，但B及硼化物不能单独影响细化过程，而是富集在TiAl3相中对细化过程产生重要影响。
关键字: 晶粒细化 TiAl3相 有效形核相 Al-Ti-B中间合金
收稿日期： 1996-07-08 ； 修回日期： 1996-09-26 孝云祯， 男， 50岁， 副教授， 硕士
（1.Department of Metal Working, Northeastern University, Shenyang 110006 ;
2.Luoyang Nonferrous Metal Forming Institute, Luoyang 471000）
Abstract:The effects of TiAl3, TiB2 and AlB2 phases in the Al-Ti-B master alloy on grain refining of aluminium were studied. The results showed that the TiAl3 phase is an effective nucleation agent, while the TiB2 and AlB2 phases can not be nucleation particles alone. The boron which has marked influence on the grain refin ing of Al-Ti-B master alloys does not have effect on refining process alone, but it would produce important effect on the refining process when it concentrates in the TiAl3 phases.
Key words: grain refining TiAl3 phase effective nucleation phase Al-Ti-B master alloy
