Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1637873 | Transactions of Nonferrous Metals Society of China | 2012 | 8 Pages |
Abstract
The effect of the pre-deformation of rolling combined with stretching on the stress corrosion cracking resistance of aluminum alloy 2519A was studied by means of the slow strain rate technique at 10â6 sâ1. The tensile strength and stress corrosion index of the alloy plate with 7% rolling plus 3% perpendicular stretching were 481 MPa and 0.0429, respectively, showing better mechanical property and stress corrosion cracking resistance than those with 4% rolling plus 3% parallel stretching or 7% rolling plus 3% parallel stretching, which is due to its finer and denser precipitates within the grains, discontinuous grain boundary precipitates, as well as more narrow precipitate-free zone width. Such microstructure is attributing to the denser and more homogeneously distributed dislocations which are produced by the pre-deformation.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Xin-ming ZHANG, Ling LIU, Ling-ying YE, Jun LIU, Zhao LEI, Ji-chao SONG,