The effect of Ti on precipitation of fully coherent DO22 superlattice in an Ni-Cr-W-based superalloy

Xiangyu Gao; Rui Hu; Gongliao Luo

doi:10.1016/j.scriptamat.2017.02.037

The effect of Ti on precipitation of fully coherent DO₂₂ superlattice in an Ni-Cr-W-based superalloy

Xiangyu Gao
, Rui Hu
, Gongliao Luo

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

23 引用（Scopus）

摘要

The ordering reaction in the newly developed Ni-Cr-W-Ti alloy aged at 700 °C has been investigated using atom probe tomography and transmission electron microscopy. The results reveal that the existence of titanium in the superalloy induces and stabilizes the DO₂₂ superlattices, which cannot precipitate in the ternary Ni-Cr-W superalloy. The stoichiometry of the DO₂₂ phase has been determined to be Ni₃(Cr_0.2W_0.4Ti_0.4), and the interfaces between DO₂₂ precipitates and matrix have been revealed to be fully coherent at the atomic scale.

源语言	英语
页（从-至）	15-19
页数	5
期刊	Scripta Materialia
卷	134
DOI	https://doi.org/10.1016/j.scriptamat.2017.02.037
出版状态	已出版 - 1 6月 2017

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10.1016/j.scriptamat.2017.02.037

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title = "The effect of Ti on precipitation of fully coherent DO22 superlattice in an Ni-Cr-W-based superalloy",

abstract = "The ordering reaction in the newly developed Ni-Cr-W-Ti alloy aged at 700 °C has been investigated using atom probe tomography and transmission electron microscopy. The results reveal that the existence of titanium in the superalloy induces and stabilizes the DO22 superlattices, which cannot precipitate in the ternary Ni-Cr-W superalloy. The stoichiometry of the DO22 phase has been determined to be Ni3(Cr0.2W0.4Ti0.4), and the interfaces between DO22 precipitates and matrix have been revealed to be fully coherent at the atomic scale.",

keywords = "Atom probe tomography, DO superlattice, High resolution transmission electron microscopy, Ni-Cr-W-Ti superalloy",

author = "Xiangyu Gao and Rui Hu and Gongliao Luo",

note = "Publisher Copyright: {\textcopyright} 2017 Acta Materialia Inc.",

year = "2017",

month = jun,

day = "1",

doi = "10.1016/j.scriptamat.2017.02.037",

language = "英语",

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TY - JOUR

T1 - The effect of Ti on precipitation of fully coherent DO22 superlattice in an Ni-Cr-W-based superalloy

AU - Gao, Xiangyu

AU - Hu, Rui

AU - Luo, Gongliao

PY - 2017/6/1

Y1 - 2017/6/1

N2 - The ordering reaction in the newly developed Ni-Cr-W-Ti alloy aged at 700 °C has been investigated using atom probe tomography and transmission electron microscopy. The results reveal that the existence of titanium in the superalloy induces and stabilizes the DO22 superlattices, which cannot precipitate in the ternary Ni-Cr-W superalloy. The stoichiometry of the DO22 phase has been determined to be Ni3(Cr0.2W0.4Ti0.4), and the interfaces between DO22 precipitates and matrix have been revealed to be fully coherent at the atomic scale.

AB - The ordering reaction in the newly developed Ni-Cr-W-Ti alloy aged at 700 °C has been investigated using atom probe tomography and transmission electron microscopy. The results reveal that the existence of titanium in the superalloy induces and stabilizes the DO22 superlattices, which cannot precipitate in the ternary Ni-Cr-W superalloy. The stoichiometry of the DO22 phase has been determined to be Ni3(Cr0.2W0.4Ti0.4), and the interfaces between DO22 precipitates and matrix have been revealed to be fully coherent at the atomic scale.

KW - Atom probe tomography

KW - DO superlattice

KW - High resolution transmission electron microscopy

KW - Ni-Cr-W-Ti superalloy

UR - https://www.scopus.com/pages/publications/85015412177

U2 - 10.1016/j.scriptamat.2017.02.037

DO - 10.1016/j.scriptamat.2017.02.037

M3 - 文章

AN - SCOPUS:85015412177

SN - 1359-6462

VL - 134

SP - 15

EP - 19

JO - Scripta Materialia

JF - Scripta Materialia

ER -

The effect of Ti on precipitation of fully coherent DO22 superlattice in an Ni-Cr-W-based superalloy

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The effect of Ti on precipitation of fully coherent DO₂₂ superlattice in an Ni-Cr-W-based superalloy