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Effect of Mo on the High-Temperature Creep Resistance and Machinability of a Recycled Al-Alloy with High Iron Impurity

Wan Qurratul Ain, Wan Mohamad and M. K., Faisal and M. K., Talari and W., Darham and M. M., Ratnam and Y., Kwon and N. J., Kim and A. K., Prasada Rao (2016) Effect of Mo on the High-Temperature Creep Resistance and Machinability of a Recycled Al-Alloy with High Iron Impurity. Journal of Materials Engineering and Performance, 25 (10). pp. 4310-4316. ISSN 1059-9495

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Abstract

Reported work focuses on the effect of morphology of the Fe-rich intermetallic phases on the machinability of Al-alloy containing >2wt.% Fe, obtained from automotive scrap. Effect of Mo addition on the microstructure, high-temperature impression creep and thereby the machinability of the Al-recycled alloy were studied. The machinability of the recycled alloy was estimated by investigating the built-up-edge (BUE) and surface roughness (Ra). SEM-EDS and TEM-SADP studies have shown that the crystal structure (BCC) of the Al8Fe2Si phase remained unchanged; however, Mo replaced few Fe atoms with little effect on the lattice dimension. It has been found that the addition of Mo to the recycled alloy suppresses the formation of β-phase (Al5FeSi) by suppressing the peritectic transformation of α (Al8Fe2Si) phase. Such suppression is found to improve the high-temperature creep resistance and the machinability with the increase in the Mo addition level.

Item Type: Article
Uncontrolled Keywords: aluminumcasting and solidification; electron; intermetallic; machining; microscopy; optical; metallography; recycling
Subjects: T Technology > TS Manufactures
Faculty/Division: Faculty of Manufacturing Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 03 Apr 2017 05:41
Last Modified: 12 Mar 2018 02:32
URI: http://umpir.ump.edu.my/id/eprint/14524
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