Susceptibility of Ti–6Al–4V alloy to stress corrosion cracking in a Lewis-neutral aluminium chloride–1-ethyl-3-methylimidazolium chloride ionic liquid

•The susceptibility of Ti–6Al–4V alloy to SCC in ionic liquid is first reported.•In neutral AlCl3–EMIC IL, the SCC cracks initiate at α/β phase boundaries of Ti–6Al–4V alloy.•IGSCC was observed at the early stage of cracking and followed by TGSCC with increasing crack length. The susceptibility of T...

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Bibliographic Details
Published in:Corrosion science 2013-11, Vol.76, p.494-497
Main Authors: Tsai, Wen-Ta, Lin, Chien-Liang, Pan, Szu-Jung
Format: Article
Language:English
Subjects:
A. Titanium
Aluminium
Applied sciences
B. SEM
C. Stress corrosion
Chlorides
Corrosion
Corrosion environments
Exact sciences and technology
Fracture mechanics
Ionic liquids
Metals. Metallurgy
Phase boundaries
Stress corrosion cracking
Titanium base alloys
Vanadium base alloys
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Summary:•The susceptibility of Ti–6Al–4V alloy to SCC in ionic liquid is first reported.•In neutral AlCl3–EMIC IL, the SCC cracks initiate at α/β phase boundaries of Ti–6Al–4V alloy.•IGSCC was observed at the early stage of cracking and followed by TGSCC with increasing crack length. The susceptibility of Ti–6Al–4V alloy to stress corrosion cracking (SCC) in a Lewis neutral AlCl3–EMIC ionic liquid (IL) was investigated employing U-bend tests. The results indicated that cracking initiated at the α/β phase boundary, propagated intergranularly, followed by transgranular cracking and failed in dimple mode under overloaded stress.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2013.07.009