(1、東北大學(xué)壓力加工系，沈陽(yáng) 110006；
2、洛陽(yáng)有色加工設(shè)計(jì)院，洛陽(yáng) 471000)
摘 要: 研究了Al-Ti-B晶粒細(xì)化合金中各化合物相TiAl3、TiB2和AlB2對(duì)鋁晶粒的細(xì)化作用。結(jié)果表明，TiAl3相是有效形核相，TiB2和AlB2相不能單獨(dú)作為形核相，B對(duì)Al-Ti-B的細(xì)化作用有顯著影響，但B及硼化物不能單獨(dú)影響細(xì)化過(guò)程，而是富集在TiAl3相中對(duì)細(xì)化過(guò)程產(chǎn)生重要影響。
關(guān)鍵字: 晶粒細(xì)化 TiAl3相 有效形核相 Al-Ti-B中間合金
收稿日期： 1996-07-08 ； 修回日期： 1996-09-26 孝云禎， 男， 50歲， 副教授， 碩士
（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
