title: Effects of Cu addition on nanocluster formation and two-step aging behaviors of Al-Mg-Si alloys.
abstract: Two types of nanoclusters, i.e., Cluster (1) and Cluster (2), are detected in both Cu-free and Cu-added alloys. The Cu addition to the Al-Mg-Si alloys highly suppresses the formation of Cluster (1) at the initial stage of natural aging and causes higher peak hardness. The over-aging is suppressed in the Cu-added alloy, showing higher thermal stability.
authors: Metallurgy and Ceramics Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8552, Japan.
authors: Jae Hwang
authors: JH
authors: Kim
authors: Tatsuo
authors: T
authors: Sato