Effect of Zinc Addition on Static- and Dynamic-SCC Properties of Al-Li-Cu 2090 Alloy

Effect of Zinc Addition on Static- and Dynamic-SCC Properties of Al-Li-Cu 2090 Alloy

A series of stress corrosion cracking (SCC) tests was carried out on the peak-aged Al-Li-Cu 2090 alloy plates to examine the effect of zinc addition on static- and dynamic-SCC properties. The alloy with 0.7% Zn addition showed an improved static-SCC resistance in the S-L direction. The reference 209...

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Veröffentlicht in:TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1998/07/25, Vol.64(623), pp.1964-1969
Hauptverfasser: OHSAKI, Shuhei, IINO, Makio, KOBAYASHI, Kazunori, SAKAMOTO, Toshimasa
Format: Artikel
Sprache:eng ; jpn
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2090
Al-Li Alloy
Crack Profile
Precipitates
SCC
Texture
Zn Addition
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container_end_page 1969
container_issue 623
container_start_page 1964
container_title TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
container_volume 64
creator OHSAKI, Shuhei
IINO, Makio
KOBAYASHI, Kazunori
SAKAMOTO, Toshimasa
description A series of stress corrosion cracking (SCC) tests was carried out on the peak-aged Al-Li-Cu 2090 alloy plates to examine the effect of zinc addition on static- and dynamic-SCC properties. The alloy with 0.7% Zn addition showed an improved static-SCC resistance in the S-L direction. The reference 2090 alloy exposed to aqueous sodium chloride solution exhibited an accelerated dynamic-SCC growth in the T-L direction, relative to exposure to laboratory air, while the alloy with Zn addition revealed a reduced environment-sensitive crack growth. The dynamic-SCC was transgranular, the crack path appearing tortuous, which is assumed resulting from localized planar slip associated with {110} texture and inhomogeneous distribution of T1 precipitates. It was found that Zn addition is effective in reducing the slip planarity and preferential dissolution along slip bands.
doi_str_mv 10.1299/kikaia.64.1964
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1884-8338
language eng ; jpn
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source J-STAGE Free; EZB-FREE-00999 freely available EZB journals
subjects 2090
Al-Li Alloy
Crack Profile
Precipitates
SCC
Texture
Zn Addition
title Effect of Zinc Addition on Static- and Dynamic-SCC Properties of Al-Li-Cu 2090 Alloy
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