Environmentally assisted cracking behaviour of Al-Zn-Mg-Cu-Cr alloy bonded with polymer matrix composite stiffener
DSpace at IIT Bombay
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Title |
Environmentally assisted cracking behaviour of Al-Zn-Mg-Cu-Cr alloy bonded with polymer matrix composite stiffener
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Creator |
KALE, SS
RAJA, VS BAKARE, AK |
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Subject |
Aluminium
Polymer Stress corrosion Crevice corrosion STRESS-CORROSION CRACKING ALUMINUM-ALLOYS LOCALIZED CORROSION OCCLUDED CELL ZR ALLOY SUSCEPTIBILITY AEROSPACE REPAIR |
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Description |
Studies were conducted to investigate the effect of polymer matrix composite stiffener (patch) on environmentally assisted cracking (EAC) susceptibility of pre-cracked alclad Al-Zn-Mg-Cu-Cr alloy in 3.5 wt.% NaCl environment. The EAC threshold stress intensity of the peak and two-step aged alloy was reduced from 26 to 7 MPa m(1/2) and 31to 8 MPa m(1/2) respectively under the influence of patch. The plateau crack velocity was increased from 2.5 x 10(-9) to 5.1 x 10(-9) m/s for peak aged and 1.2 x 10(-9) to 2.0 x 10(-9) m/s for two-step aged tempers in patched condition. The significant increase in EAC susceptibility was attributed to crevice effect generated by the stiffener. (C) 2013 Elsevier Ltd. All rights reserved.
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Publisher |
PERGAMON-ELSEVIER SCIENCE LTD
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Date |
2014-10-16T07:08:12Z
2014-10-16T07:08:12Z 2013 |
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Type |
Article
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Identifier |
CORROSION SCIENCE, 75318-325
http://dx.doi.org/10.1016/j.corsci.2013.06.015 http://dspace.library.iitb.ac.in/jspui/handle/100/15513 |
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Language |
en
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