Direct atomic-scale visualization of growth and dissolution of γNb                         5                         Si                         3                          in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy

Xiao Ma; Xiping Guo; Maosen Fu; Yanqiang Qiao

doi:10.1016/j.scriptamat.2019.01.040

Direct atomic-scale visualization of growth and dissolution of γNb ₅ Si ₃ in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy

Xiao Ma, Xiping Guo, Maosen Fu, Yanqiang Qiao

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

9 Scopus citations

Abstract

Precipitation and dissolution of γNb ₅ Si ₃ precipitates in an Nb-Ti-Si based alloy has been visualized by atomic-scale in-situ heating transmission electron microscopy. Nanoscale γNb ₅ Si ₃ precipitates nucleate inside Nbss around 850 °C with two orientation relationships (ORs): (200) _Nb //11¯00 _γ (OR-I) and 101¯ _Nb //11¯00 _γ (OR-II). Growth and dissolution of the two orientational γNb ₅ Si ₃ precipitates are promoted by motion of atomic steps and facets at interfaces. Precipitates along OR-I is less stable than that of OR-II, adopting dissolution temperature of 1125 °C and 1250 °C respectively. The orientational stability of γNb ₅ Si ₃ precipitates, which is correlated with planar disregistry, affects their evolution behavior directly upon heating.

Original language	English
Pages (from-to)	86-90
Number of pages	5
Journal	Scripta Materialia
Volume	164
DOIs	https://doi.org/10.1016/j.scriptamat.2019.01.040
State	Published - 15 Apr 2019

Keywords

In-situ heating TEM
Interfaces
Nb-Ti-Si based alloy
Orientational stability
Precipitation

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10.1016/j.scriptamat.2019.01.040

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Ma, X., Guo, X., Fu, M., & Qiao, Y. (2019). Direct atomic-scale visualization of growth and dissolution of γNb ₅ Si ₃ in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy Scripta Materialia, 164, 86-90. https://doi.org/10.1016/j.scriptamat.2019.01.040

Ma, Xiao ; Guo, Xiping ; Fu, Maosen et al. / Direct atomic-scale visualization of growth and dissolution of γNb ₅ Si ₃ in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy In: Scripta Materialia. 2019 ; Vol. 164. pp. 86-90.

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title = " Direct atomic-scale visualization of growth and dissolution of γNb 5 Si 3 in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy ",

abstract = " Precipitation and dissolution of γNb 5 Si 3 precipitates in an Nb-Ti-Si based alloy has been visualized by atomic-scale in-situ heating transmission electron microscopy. Nanoscale γNb 5 Si 3 precipitates nucleate inside Nbss around 850 °C with two orientation relationships (ORs): (200) Nb //11¯00 γ (OR-I) and 101¯ Nb //11¯00 γ (OR-II). Growth and dissolution of the two orientational γNb 5 Si 3 precipitates are promoted by motion of atomic steps and facets at interfaces. Precipitates along OR-I is less stable than that of OR-II, adopting dissolution temperature of 1125 °C and 1250 °C respectively. The orientational stability of γNb 5 Si 3 precipitates, which is correlated with planar disregistry, affects their evolution behavior directly upon heating.",

keywords = "In-situ heating TEM, Interfaces, Nb-Ti-Si based alloy, Orientational stability, Precipitation",

author = "Xiao Ma and Xiping Guo and Maosen Fu and Yanqiang Qiao",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

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day = "15",

doi = "10.1016/j.scriptamat.2019.01.040",

language = "英语",

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Ma, X, Guo, X, Fu, M & Qiao, Y 2019, ' Direct atomic-scale visualization of growth and dissolution of γNb ₅ Si ₃ in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy ', Scripta Materialia, vol. 164, pp. 86-90. https://doi.org/10.1016/j.scriptamat.2019.01.040

Direct atomic-scale visualization of growth and dissolution of γNb ₅ Si ₃ in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy . / Ma, Xiao; Guo, Xiping; Fu, Maosen et al.
In: Scripta Materialia, Vol. 164, 15.04.2019, p. 86-90.

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

TY - JOUR

T1 - Direct atomic-scale visualization of growth and dissolution of γNb 5 Si 3 in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy

AU - Ma, Xiao

AU - Guo, Xiping

AU - Fu, Maosen

AU - Qiao, Yanqiang

PY - 2019/4/15

Y1 - 2019/4/15

N2 - Precipitation and dissolution of γNb 5 Si 3 precipitates in an Nb-Ti-Si based alloy has been visualized by atomic-scale in-situ heating transmission electron microscopy. Nanoscale γNb 5 Si 3 precipitates nucleate inside Nbss around 850 °C with two orientation relationships (ORs): (200) Nb //11¯00 γ (OR-I) and 101¯ Nb //11¯00 γ (OR-II). Growth and dissolution of the two orientational γNb 5 Si 3 precipitates are promoted by motion of atomic steps and facets at interfaces. Precipitates along OR-I is less stable than that of OR-II, adopting dissolution temperature of 1125 °C and 1250 °C respectively. The orientational stability of γNb 5 Si 3 precipitates, which is correlated with planar disregistry, affects their evolution behavior directly upon heating.

AB - Precipitation and dissolution of γNb 5 Si 3 precipitates in an Nb-Ti-Si based alloy has been visualized by atomic-scale in-situ heating transmission electron microscopy. Nanoscale γNb 5 Si 3 precipitates nucleate inside Nbss around 850 °C with two orientation relationships (ORs): (200) Nb //11¯00 γ (OR-I) and 101¯ Nb //11¯00 γ (OR-II). Growth and dissolution of the two orientational γNb 5 Si 3 precipitates are promoted by motion of atomic steps and facets at interfaces. Precipitates along OR-I is less stable than that of OR-II, adopting dissolution temperature of 1125 °C and 1250 °C respectively. The orientational stability of γNb 5 Si 3 precipitates, which is correlated with planar disregistry, affects their evolution behavior directly upon heating.

KW - In-situ heating TEM

KW - Interfaces

KW - Nb-Ti-Si based alloy

KW - Orientational stability

KW - Precipitation

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DO - 10.1016/j.scriptamat.2019.01.040

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SN - 1359-6462

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JO - Scripta Materialia

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Ma X, Guo X, Fu M, Qiao Y. Direct atomic-scale visualization of growth and dissolution of γNb ₅ Si ₃ in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy Scripta Materialia. 2019 Apr 15;164:86-90. doi: 10.1016/j.scriptamat.2019.01.040

Direct atomic-scale visualization of growth and dissolution of γNb ₅ Si ₃ in an Nb-Ti-Si based alloy via in-situ transmission electron microscopy

Abstract

Keywords

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