Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7896424 | Corrosion Science | 2013 | 8 Pages |
Abstract
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 m1/2 and 31to 8 MPa m1/2 respectively under the influence of patch. The plateau crack velocity was increased from 2.5 Ã 10â9 to 5.1 Ã 10â9 m/s for peak aged and 1.2 Ã 10â9 to 2.0 Ã 10â9 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S.S. Kale, V.S. Raja, A.K. Bakare,