|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Atom Probe Tomography for Advanced Characterization of Metals, Minerals and Materials III
||Characterization of Mechanical Properties of the A356 Cast Aluminum Alloy in Accordance with the Cluster Formation Behaviors at Different Aging Temperatures
||Won Sang Shin, Kyo Jin Hwang, Dong-Hyuk Jung, Yoon-Jun Kim
|On-Site Speaker (Planned)
||Won Sang Shin
An A356 cast aluminum alloy (Al–7wt.%Si–0.3wt.%Mg), contains approximately 50% eutectic microstructure. Such a high content of Si plays a significant role in strengthening of the alloy by controlling eutectic morphology, precipitation of various intermetallic compounds, and formation of Al-Si-Mg based clusters in α-matrix.
We present the formation behaviors of Al-Si-Mg-Mn nanoclusters in the alloy using an Atom Probe Tomography (APT). Samples were differently aged at the temperatures of 110℃, 130℃, and 150℃. As a result of the cluster analysis, the characteristics of clusters according to the temperature such as the mean radius, <R>, the number density of clusters per volume, NV, were obtained. The A356 alloy exhibited 4 types of clusters formed in α-matrix depending on their atomic concentration ratios among Al, Mg, and Mn. The results from tensile tests for those samples indicate tensile strength and elongation are strongly dependent of the cluster types, <R>, and NV.
||Planned: Supplemental Proceedings volume