Particle erosion of die cast Al-14Si alloy and influence of friction stir process

T. W. Cheng; L. H. Chen; Truan-Sheng Lui

doi:10.1179/1743133611Y.0000000034

Particle erosion of die cast Al-14Si alloy and influence of friction stir process

T. W. Cheng, L. H. Chen, Truan-Sheng Lui

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

4 Citations (Scopus)

Abstract

The current research aimed to explore the particle erosion of a die cast Al-14Si alloy, and how the particle erosion behaviour can be affected by modification of the microstructure via friction stir process. The results indicate that friction stirring of the alloy can annihilate the dendritic structure of primary α-Al, break the eutectic Si and β-Al ₃(Fe,Mn)Si ₂ particles lengthwise, cause the eutectic Si particles to become more rounded, and blend the second phase particles rather uniformly in the α-Al matrix. According to the SiO ₂ particle erosion test at 15 and 90° impact angles, this microstructure modification can improve the erosion resistance by not only particle reinforcement of α-Al matrix but also suppressing the susceptibility of brittle cracking of the second phase particles.

Original language	English
Pages (from-to)	155-159
Number of pages	5
Journal	International Journal of Cast Metals Research
Volume	25
Issue number	3
DOIs	https://doi.org/10.1179/1743133611Y.0000000034
Publication status	Published - 2012 Jun

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Mechanics of Materials
Metals and Alloys

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abstract = "The current research aimed to explore the particle erosion of a die cast Al-14Si alloy, and how the particle erosion behaviour can be affected by modification of the microstructure via friction stir process. The results indicate that friction stirring of the alloy can annihilate the dendritic structure of primary α-Al, break the eutectic Si and β-Al 3(Fe,Mn)Si 2 particles lengthwise, cause the eutectic Si particles to become more rounded, and blend the second phase particles rather uniformly in the α-Al matrix. According to the SiO 2 particle erosion test at 15 and 90° impact angles, this microstructure modification can improve the erosion resistance by not only particle reinforcement of α-Al matrix but also suppressing the susceptibility of brittle cracking of the second phase particles.",

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AU - Cheng, T. W.

AU - Chen, L. H.

AU - Lui, Truan-Sheng

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N2 - The current research aimed to explore the particle erosion of a die cast Al-14Si alloy, and how the particle erosion behaviour can be affected by modification of the microstructure via friction stir process. The results indicate that friction stirring of the alloy can annihilate the dendritic structure of primary α-Al, break the eutectic Si and β-Al 3(Fe,Mn)Si 2 particles lengthwise, cause the eutectic Si particles to become more rounded, and blend the second phase particles rather uniformly in the α-Al matrix. According to the SiO 2 particle erosion test at 15 and 90° impact angles, this microstructure modification can improve the erosion resistance by not only particle reinforcement of α-Al matrix but also suppressing the susceptibility of brittle cracking of the second phase particles.

AB - The current research aimed to explore the particle erosion of a die cast Al-14Si alloy, and how the particle erosion behaviour can be affected by modification of the microstructure via friction stir process. The results indicate that friction stirring of the alloy can annihilate the dendritic structure of primary α-Al, break the eutectic Si and β-Al 3(Fe,Mn)Si 2 particles lengthwise, cause the eutectic Si particles to become more rounded, and blend the second phase particles rather uniformly in the α-Al matrix. According to the SiO 2 particle erosion test at 15 and 90° impact angles, this microstructure modification can improve the erosion resistance by not only particle reinforcement of α-Al matrix but also suppressing the susceptibility of brittle cracking of the second phase particles.

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Particle erosion of die cast Al-14Si alloy and influence of friction stir process

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