@inproceedings{29f392c8b9a54fbea0bffe37e80fa194,
title = "Two-step aging behaviour of solution treated a356 system alloy",
abstract = "Al-7mass%Si-0.3mass%Mg alloy is widely applied to the automotive components, such as road wheel or suspension frame because of having higher ductility and corrosion resistance. Two-step aging behavior of solution treated Al-7mass%Si-0.3mass%Mg system alloy A356 cast into permanent mold and solution treated was investigated by micro-vickers hardness measurement, optical microscopy (OM) and transmission electron microscopy (TEM). The microstructure of as-cast state was consist of primary crystallized α-Al and secondary crystallized eutectic phases. Al-7mass%Si-0.3mass%Mg alloy after casting, the test specimens were heat treated for different pre-aging temperatures at 273K, 348K and 423K for various times after solution treatment at 813K for 36ks. After pre-aging treatment, the test specimens were heat treated for artificial aging at 523K for various times. The peak hardness increased almost the same value when the pre-aging temperature was 273K. On the other hands, positive effect of the final-aging was occurred after pre-aging at 348K and 423K with significantly increasing hardness in the under-aging region. The fine precipitates were observed in the specimen which was final aging at 523K after pre-aging at 348K and 423K.Such a positive effect is considered due to the influence of precipitated phase mainly such as clusters and /or G.P.zone.The present study aims to investigate the effect of pre-aged temperature on final-aged behavior in A356 system alloy.",
keywords = "Al-Si-Mg alloy, Casting, Positive effect, Solution treatment, Two-step aging",
author = "Masahiko Iijima and Tomoya Ozasa and Susumu Ikeno and Kenji Matsuda and Seiji Saikawa",
note = "Publisher Copyright: {\textcopyright} 2018 Trans Tech Publications, Switzerland.; 10th International Conference on Processing and Manufacturing of Advanced Materials, 2018 ; Conference date: 09-07-2018 Through 13-07-2018",
year = "2018",
doi = "10.4028/www.scientific.net/MSF.941.1083",
language = "英語",
isbn = "9783035712087",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
pages = "1083--1087",
editor = "R. Shabadi and Mihail Ionescu and M. Jeandin and C. Richard and Tara Chandra",
booktitle = "THERMEC 2018",
}