| Reduction in secondary dendrite arm spacing in cast eutectic Al-Si piston alloys by cerium addition |
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| 引用本文： | R. Ahmad,M. B. A. Asmael,N. R. Shahizan,S. Gandouz. Reduction in secondary dendrite arm spacing in cast eutectic Al-Si piston alloys by cerium addition[J]. 矿物冶金与材料学报, 2017, 24(1): 91-101. DOI: 10.1007/s12613-017-1382-9 |
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| 作者姓名： | R. Ahmad M. B. A. Asmael N. R. Shahizan S. Gandouz |
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| 作者单位： | Department of Manufacturing and Industrial Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400 Batu Pahat, Johor, Malaysia |
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| 基金项目： | The authors would like to acknowledge the ministry of higher education Malaysia and Universiti Tun Hussein Onn Malaysia for supporting this research under Vot |
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| 摘 要： | The effects of Ce on the secondary dendrite arm spacing (SDAS) and mechanical behavior of Al-Si-Cu-Mg alloys were investigated. The reduction of SDAS at different Ce concentrations was evaluated in a directional solidification experiment via computer-aided cooling curve thermal analysis (CA CCTA). -The results showed that 0.1wt%-1.0wt% Ce addition resulted in a rapid solidification time, △TS, and low solidification temperature, △TS, whereas 0.1wt% Ce resulted in a fast solidification time, △ta-Al, of the α-Al phase. Furthermore, Ce addition refined the SDAS, which was reduced to approximately 36%. The mechanical properties of the alloys with and without Ce were investigated using tensile and hardness tests. The quality index (Q) and ultimate tensile strength of (UTS) Al-Si-Cu-Mg alloys significantly improved with the addition of 0.1wt% Ce. Moreover, the base alloy hardness was improved with increasing Ce concentration.
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| 关 键 词： | eutectic alloys aluminum silicon alloys cerium microstructure dendrites spacing mechanical properties |
Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition |
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| R. Ahmad,M. B. A. Asmael,N. R. Shahizan,S. Gandouz. Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition[J]. International Journal of Minerals,Metallurgy and Materials, 2017, 24(1): 91-101. DOI: 10.1007/s12613-017-1382-9 |
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| Authors: | R. Ahmad M. B. A. Asmael N. R. Shahizan S. Gandouz |
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| Affiliation: | Department of Manufacturing and Industrial Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein 0nn Malaysia, Parit Raja, 86400 Batu Pahat, Johor, Malaysia |
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| Abstract: | The effects of Ce on the secondary dendrite arm spacing (SDAS) and mechanical behavior of Al–Si–Cu–Mg alloys were investigated. The reduction of SDAS at different Ce concentrations was evaluated in a directional solidification experiment via computer-aided cooling curve thermal analysis (CA?CCTA). The results showed that 0.1wt%–1.0wt% Ce addition resulted in a rapid solidification time, Δt s, and low solidification temperature, ΔT S, whereas 0.1wt% Ce resulted in a fast solidification time, Δt a–Al, of the α-Al phase. Furthermore, Ce addition refined the SDAS, which was reduced to approximately 36%. The mechanical properties of the alloys with and without Ce were investigated using tensile and hardness tests. The quality index (Q) and ultimate tensile strength of (UTS) Al–Si–Cu–Mg alloys significantly improved with the addition of 0.1wt% Ce. Moreover, the base alloy hardness was improved with increasing Ce concentration. |
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| Keywords: | eutectic alloys aluminum silicon alloys cerium microstructure dendrites spacing mechanical properties |
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