采用熔融玻璃自分离净化工艺,使得合金(Ni_(0.53)Fe_(0.33)Co_(0.14))_(73)B_(17)Si_8Nb_2获取深过冷观察到孪晶生长方式的凝固特征通过相成分及组织结构和形貌的分析,并结合深过冷液态合金凝固过程的特点,对孪晶的形成和长大机理作了初步的探讨
Deep undercooling for Ni-base alloy, i.e., (Ni_(0.53)Fe_(0.33)Co_(0.14))_(73)B_(17)Si_8Nb_2, wasobtained by technique of auto-separating denucleation of molten glass. The solidification ofthe undercooled Ni-base alloy is observed to be in a mode of twin growth. Mechanism on theformation and growth of twins was approached by studies of composition, structure andmorphology of the alloy, together with the solidificatiion of deep undercooling alloy melt. Theundercooling, crystal lattice and composition of the alloy seem to be the most important fac-tors in the formation and growth of twins.
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