(S)TEM study of different stages of Ti-45Al-8Nb-0.2W-0.2B-0.02Y alloy oxidation at 900 °C

W. Lu; C. L. Chen; L. L. He; F. H. Wang; J. P. Lin; G. L. Chen

doi:10.1016/j.corsci.2007.11.013

(S)TEM study of different stages of Ti-45Al-8Nb-0.2W-0.2B-0.02Y alloy oxidation at 900 °C

W. Lu, C. L. Chen, L. L. He, F. H. Wang, J. P. Lin, G. L. Chen

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

32 Citations (Scopus)

Abstract

The oxidation process of Ti-45Al-8Nb-0.2W-0.2B-0.02Y (at%) can be divided into three stages during 100 h at 900 °C. The change of ion diffusion path leads to the discontinuity of the oxidation curve between the second and third stage. Different stages of oxidation morphology have been investigated combined with TEM and STEM. AlNb₂ phase forms at the interface of oxide scale/base alloy. Contrary to a continuous formation of 'x' phase in γ-TiAl with Nb free at the interface of oxide scale/base alloy. AlNb₂ phase hinder continuous 'x' phase formation, which can promote TiAl oxidation protection.

Original language	English
Pages (from-to)	978-988
Number of pages	11
Journal	Corrosion Science
Volume	50
Issue number	4
DOIs	https://doi.org/10.1016/j.corsci.2007.11.013
Publication status	Published - 2008 Apr

Keywords

A. Alloy
B. STEM
C. Oxidation

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2007.11.013

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@article{99b2b5268bbf465a928bd23567d2095a,

title = "(S)TEM study of different stages of Ti-45Al-8Nb-0.2W-0.2B-0.02Y alloy oxidation at 900 °C",

abstract = "The oxidation process of Ti-45Al-8Nb-0.2W-0.2B-0.02Y (at%) can be divided into three stages during 100 h at 900 °C. The change of ion diffusion path leads to the discontinuity of the oxidation curve between the second and third stage. Different stages of oxidation morphology have been investigated combined with TEM and STEM. AlNb2 phase forms at the interface of oxide scale/base alloy. Contrary to a continuous formation of 'x' phase in γ-TiAl with Nb free at the interface of oxide scale/base alloy. AlNb2 phase hinder continuous 'x' phase formation, which can promote TiAl oxidation protection.",

keywords = "A. Alloy, B. STEM, C. Oxidation",

author = "W. Lu and Chen, {C. L.} and He, {L. L.} and Wang, {F. H.} and Lin, {J. P.} and Chen, {G. L.}",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (No. 50171068) and the Special Funds for the Major State Basic Research Projects of China Grant No. 2006CB600905.",

year = "2008",

month = apr,

doi = "10.1016/j.corsci.2007.11.013",

language = "English",

volume = "50",

pages = "978--988",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Limited",

number = "4",

}

TY - JOUR

T1 - (S)TEM study of different stages of Ti-45Al-8Nb-0.2W-0.2B-0.02Y alloy oxidation at 900 °C

AU - Lu, W.

AU - Chen, C. L.

AU - He, L. L.

AU - Wang, F. H.

AU - Lin, J. P.

AU - Chen, G. L.

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (No. 50171068) and the Special Funds for the Major State Basic Research Projects of China Grant No. 2006CB600905.

PY - 2008/4

Y1 - 2008/4

N2 - The oxidation process of Ti-45Al-8Nb-0.2W-0.2B-0.02Y (at%) can be divided into three stages during 100 h at 900 °C. The change of ion diffusion path leads to the discontinuity of the oxidation curve between the second and third stage. Different stages of oxidation morphology have been investigated combined with TEM and STEM. AlNb2 phase forms at the interface of oxide scale/base alloy. Contrary to a continuous formation of 'x' phase in γ-TiAl with Nb free at the interface of oxide scale/base alloy. AlNb2 phase hinder continuous 'x' phase formation, which can promote TiAl oxidation protection.

AB - The oxidation process of Ti-45Al-8Nb-0.2W-0.2B-0.02Y (at%) can be divided into three stages during 100 h at 900 °C. The change of ion diffusion path leads to the discontinuity of the oxidation curve between the second and third stage. Different stages of oxidation morphology have been investigated combined with TEM and STEM. AlNb2 phase forms at the interface of oxide scale/base alloy. Contrary to a continuous formation of 'x' phase in γ-TiAl with Nb free at the interface of oxide scale/base alloy. AlNb2 phase hinder continuous 'x' phase formation, which can promote TiAl oxidation protection.

KW - A. Alloy

KW - B. STEM

KW - C. Oxidation

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U2 - 10.1016/j.corsci.2007.11.013

DO - 10.1016/j.corsci.2007.11.013

M3 - Article

AN - SCOPUS:40849139428

VL - 50

SP - 978

EP - 988

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

IS - 4

ER -

(S)TEM study of different stages of Ti-45Al-8Nb-0.2W-0.2B-0.02Y alloy oxidation at 900 °C

Abstract

Keywords

ASJC Scopus subject areas

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