Effects of severe plastic deformation on the corrosion behavior of aluminum alloys

被引：74

作者：

Akiyama, Eiji ^{[1
]}

Zhang, Zuogui ^{[1
]}

Watanabe, Yoshimi ^{[2
]}

Tsuzaki, Kaneaki ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Struct Met Ctr, Tsukuba, Ibaraki 3050047, Japan

[2] Nagoya Inst Technol, Dept Engn Phys Elect & Mech, Grad Sch Engn, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2009年 / 13卷 / 02期

关键词：

Al-Ni alloy; Al-Cu alloy; ECAP; Severe plastic deformation; Corrosion; MICROSTRUCTURAL EVOLUTION; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; CHANNEL; ECAP;

D O I：

10.1007/s10008-007-0496-9

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Effects of severe plastic deformation on the corrosion behaviors of Al alloys containing precipitates have been investigated. Al and its alloys were severely deformed by equal-channel angular pressing (ECAP) processes and the corrosion behaviors of the Al alloys were evaluated by means of potentiodynamic polarization in a neutral buffer solution containing 0.002 M chloride ion. Introduction of huge plastic deformation to both of Al-5.4 wt% Ni and Al-5 wt% Cu alloys increased pitting potential. In contrast, ECAP treatment of 4N pure Al resulted in a decrease in open circuit potential, slight increase of passive current and shift of pitting potential to the negative direction. The influence of the change in microstructures caused by severe plastic deformation was investigated.

引用

页码：277 / 282

页数：6

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