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自蔓延高溫合成Ti44Ni47Nb9合金過程中的燃燒界面成分與組織
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Composition and Structure of Combustion Boundary of the Ti 44 Ni 47 Nb 9 Alloy During SelfPropagating HighTemperature Synthsis ( SHS )
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    摘要:

    采用燃燒波淬火法，獲得了Ｔｉ４４Ｎｉ４７Ｎｂ９三元系的燃燒波熄滅界面。通過對該界面及面前后的組織形貌分析和相組成變化的分析，弄清了該三元系合金在自蔓延高溫合成中的結(jié)構(gòu)和形成機(jī)理。

    Abstract:

    A combustion boundary of the Ti 44 Ni 47 Nb 9 alloy has been attained by combustion front quench (CFQ). The structures of the boundary and related products were analyzed using Xray and electronic probe scanning microanalysis (EPSM). It is found that an initial liquid phase mainly containing Ti 2 Ni phase is a precondition of combustion reaction and propagating combustion. The combustion propagation depends upon the infiltration of eutectic liquid, and the combustion synthesis is controlled by resolving components Nb and Ti into the eutectic liquid phase. It is confirmed that the reaction mechanism controlled by the components resolving, which is suggested by Vadchenko for bielement system, is suitable for SHS of TiNiNb.

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楊華斌 楊宗坡.自蔓延高溫合成Ti44Ni47Nb9合金過程中的燃燒界面成分與組織[J].稀有金屬材料與工程,1999,(2):81~84.[Yang Huabin, Ying Weihong, Lin Jingyu, Zhang Xiaoming, Guo Jihong. Composition and Structure of Combustion Boundary of the Ti 44 Ni 47 Nb 9 Alloy During SelfPropagating HighTemperature Synthsis ( SHS )[J]. Rare Metal Materials and Engineering,1999,(2):81~84.]
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