Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition

R. Ahmad; M. B.A. Asmael; N. R. Shahizan; S. Gandouz

doi:10.1007/s12613-017-1382-9

Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition

R. Ahmad^*
, M. B.A. Asmael
, N. R. Shahizan
, S. Gandouz

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

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.

Original language	English
Pages (from-to)	91-101
Number of pages	11
Journal	International Journal of Minerals, Metallurgy and Materials
Volume	24
Issue number	1
DOIs	https://doi.org/10.1007/s12613-017-1382-9
Publication status	Published - 01 Jan 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017, University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.

Keywords

aluminum silicon alloys
cerium
dendrites
eutectic alloys
mechanical properties
microstructure
spacing

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Geochemistry and Petrology
Metals and Alloys
Materials Chemistry

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title = "Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition",

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, Δts, and low solidification temperature, ΔTS, whereas 0.1wt\% Ce resulted in a fast solidification time, Δta–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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author = "R. Ahmad and Asmael, \{M. B.A.\} and Shahizan, \{N. R.\} and S. Gandouz",

note = "Publisher Copyright: {\textcopyright} 2017, University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.",

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T1 - Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition

AU - Ahmad, R.

AU - Asmael, M. B.A.

AU - Shahizan, N. R.

AU - Gandouz, S.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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, Δts, and low solidification temperature, ΔTS, whereas 0.1wt% Ce resulted in a fast solidification time, Δta–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.

AB - 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, Δts, and low solidification temperature, ΔTS, whereas 0.1wt% Ce resulted in a fast solidification time, Δta–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.

KW - aluminum silicon alloys

KW - cerium

KW - dendrites

KW - eutectic alloys

KW - mechanical properties

KW - microstructure

KW - spacing

U2 - 10.1007/s12613-017-1382-9

DO - 10.1007/s12613-017-1382-9

M3 - Article

AN - SCOPUS:85009735926

SN - 1674-4799

VL - 24

SP - 91

EP - 101

JO - International Journal of Minerals, Metallurgy and Materials

JF - International Journal of Minerals, Metallurgy and Materials

IS - 1

ER -

Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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