Nagata, Yoshihiro and Nakagawa, Ryohei and Kumaki, Takumi and Matsushita, Akira and Yaguchi, Kenichi and Sakamoto, Toshio and Orio, Kanta and Okimura, Yasuhiko and Okane, Toshimitsu and Muhammad, Khairi Faiz and Yoshida, Makoto (2024) Novel control factor for tensile strength and solidification cracking in partially solidified Al-Mn-Cu alloy based on Campbell's model with Fe-rich intermetallic compounds. Metallurgical and Materials Transactions A, 55 (11). pp. 4462-4472. ISSN 1073-5623, DOI https://doi.org/10.1007/s11661-024-07564-9.
Full text not available from this repository.Abstract
In this study, the effect of the Fe-rich intermetallic compound phases (IMC) on the solidification cracking susceptibility (Hot Tearing Susceptibility, HTS) of the Al-Mn-Cu alloy and the associated controlling factors were investigated. Using the Al-1.15Mn-1.0Cu-0.5Si-0.08Ti-0.016B-0.15Fe and Al-1.15Mn-1.0Cu-0.5Si-0.08Ti-0.016B-0.4Fe alloys, the HTS and mechanical properties in the partially solidified state were experimentally obtained. As a result, the HTS decreased with the increasing Fe contents. In addition, the tensile strength of the alloys in the partially solidified state (sigma max) increased with the increasing Fe contents. The fraction of solid cohesion considering the Fe-rich IMC phase (fsc IMC) based on the Campbell's model (fsc Campbell) is proposed as the controlling factor of sigma max. The fsc Campbell, which simulates the two-phases model of the alpha-Al and liquid phases, did not consistently demonstrate the dependence of sigma max on fsc Campbell for the two alloys (sigma max = f(fsc Campbell)). However, when employing the fsc IMC, which incorporates the Fe-rich IMC phase in a three-phases model, a consistent correlation is observed between fsc IMC and sigma max for the two alloys (sigma max = f(fsc IMC)). Therefore, it is suggested that the controlling factor influencing the change in sigma max with the Fe content should be the fsc IMC. Additionally, the bonding of primary alpha-Al phase together with Fe-rich IMC phase that is crystallized at the grain boundary will increase sigma max, contributing to the reduction of HTS.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Fe-rich intermetallic compound phases (IMC); Aluminium; Aloy |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 13 Oct 2025 06:18 |
| Last Modified: | 13 Oct 2025 06:18 |
| URI: | http://eprints.um.edu.my/id/eprint/46524 |
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