Crystallographic characteristics of an integrally directionally solidified Nb-Ti-Si based in-situ composite

Xiao Ma; Xiping Guo; Maosen Fu; Haisheng Guo

doi:10.1016/j.scriptamat.2017.06.035

Crystallographic characteristics of an integrally directionally solidified Nb-Ti-Si based in-situ composite

Xiao Ma, Xiping Guo, Maosen Fu, Haisheng Guo

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

Crystallographic characteristics have great effects on the performance of directionally solidified Nb-Ti-Si based in-situ composite, which is mainly composed of parallel Nbss/γNb₅Si₃ eutectic cells along the longitudinal axis of the specimens. Nbss and γNb₅Si₃ grow up in a coupled manner and exhibit preferred growth orientation along [111]_Nb and 0001¯_γ zone axes, respectively. Under these orientations, two types of coherent interfaces have been formed between the two phases, corresponding to the different morphologies of γNb₅Si₃. The preferred growth orientations and coherent interface structures might promote the coupled growth and enhance the stability of the eutectic cells of this in-situ composite.

Original language	English
Pages (from-to)	108-113
Number of pages	6
Journal	Scripta Materialia
Volume	139
DOIs	https://doi.org/10.1016/j.scriptamat.2017.06.035
State	Published - Oct 2017

Keywords

Directional solidification
Eutectic microstructure
Interface structure
Nb-Ti-Si based in-situ composite
Preferred growth orientation

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10.1016/j.scriptamat.2017.06.035

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title = "Crystallographic characteristics of an integrally directionally solidified Nb-Ti-Si based in-situ composite",

abstract = "Crystallographic characteristics have great effects on the performance of directionally solidified Nb-Ti-Si based in-situ composite, which is mainly composed of parallel Nbss/γNb5Si3 eutectic cells along the longitudinal axis of the specimens. Nbss and γNb5Si3 grow up in a coupled manner and exhibit preferred growth orientation along [111]Nb and 0001¯γ zone axes, respectively. Under these orientations, two types of coherent interfaces have been formed between the two phases, corresponding to the different morphologies of γNb5Si3. The preferred growth orientations and coherent interface structures might promote the coupled growth and enhance the stability of the eutectic cells of this in-situ composite.",

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author = "Xiao Ma and Xiping Guo and Maosen Fu and Haisheng Guo",

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doi = "10.1016/j.scriptamat.2017.06.035",

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T1 - Crystallographic characteristics of an integrally directionally solidified Nb-Ti-Si based in-situ composite

AU - Ma, Xiao

AU - Guo, Xiping

AU - Fu, Maosen

AU - Guo, Haisheng

PY - 2017/10

Y1 - 2017/10

N2 - Crystallographic characteristics have great effects on the performance of directionally solidified Nb-Ti-Si based in-situ composite, which is mainly composed of parallel Nbss/γNb5Si3 eutectic cells along the longitudinal axis of the specimens. Nbss and γNb5Si3 grow up in a coupled manner and exhibit preferred growth orientation along [111]Nb and 0001¯γ zone axes, respectively. Under these orientations, two types of coherent interfaces have been formed between the two phases, corresponding to the different morphologies of γNb5Si3. The preferred growth orientations and coherent interface structures might promote the coupled growth and enhance the stability of the eutectic cells of this in-situ composite.

AB - Crystallographic characteristics have great effects on the performance of directionally solidified Nb-Ti-Si based in-situ composite, which is mainly composed of parallel Nbss/γNb5Si3 eutectic cells along the longitudinal axis of the specimens. Nbss and γNb5Si3 grow up in a coupled manner and exhibit preferred growth orientation along [111]Nb and 0001¯γ zone axes, respectively. Under these orientations, two types of coherent interfaces have been formed between the two phases, corresponding to the different morphologies of γNb5Si3. The preferred growth orientations and coherent interface structures might promote the coupled growth and enhance the stability of the eutectic cells of this in-situ composite.

KW - Directional solidification

KW - Eutectic microstructure

KW - Interface structure

KW - Nb-Ti-Si based in-situ composite

KW - Preferred growth orientation

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DO - 10.1016/j.scriptamat.2017.06.035

M3 - 文章

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VL - 139

SP - 108

EP - 113

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Crystallographic characteristics of an integrally directionally solidified Nb-Ti-Si based in-situ composite

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Keywords

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