摘要
用“玻璃覆盖、熔盐净化及热循环”复合方法实现了大块Al－Mn－（Si；B）熔体的深过冷，获得了100K的过冷度，并自发生成准晶相．研究了准晶相的形核及生长形貌特点，结果表明，准晶相为初生凝固相．初生准晶相的形成归因于推晶相的固液界面能低于竞争晶体相.
The complex method of glass covering, salt denucleating and multiple superheatingcooling has been successfully used to obtain high undercooling and initiate quasicrystalline phase formation from a bulk Al-Mn-(Si,B) melt at undercooling of 100K. The investigations on both nucleation and grOWth morphology characteristics of quasicrystalline phase have shown that the quasicrystalline phase is primarily solidified phase. Formation of primary quasicrystal phase is attributed to the less solid/liquid interfacial energy of quasicrystalline phase in comparison to that of competing crystalline phases.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
1999年第3期261-266,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金!9671045
航空科学基金!96G53081
航空高等院校自选课题!98BX0403
关键词
深过冷
准晶相
凝固
铝锰(硅硼)合金
high undercooling, quasicrystalline phase, Al-Mn-(Si,B) alloy
