抄録
The grain and dislocation structures in an Al-4.3Cu-1.4Mg alloy friction stir spot weld made using tool rotational speeds from 750 to 1500 rpm are investigated. The stir zone region contains grains with random boundaries, where grains with dimensions <250 nm are free of dislocations, and grains having average dimensions >500 nm possessed high dislocation densities. Dislocation annihilation is negligible during the spot welding process. Grain boundary sliding accounts for the low dislocation density in grains having sizes <250 nm. Crown
| 本文言語 | 英語 |
|---|---|
| ページ（範囲） | 236-239 |
| ページ数 | 4 |
| ジャーナル | Scripta Materialia |
| 巻 | 60 |
| 号 | 4 |
| DOI | |
| 出版ステータス | 出版済み - 2009/02 |
ASJC Scopus 主題領域
- 材料科学一般
- 凝縮系物理学
- 材料力学
- 機械工学
- 金属および合金