TY - JOUR
T1 - Particle erosion of die cast Al-14Si alloy and influence of friction stir process
AU - Cheng, T. W.
AU - Chen, L. H.
AU - Lui, Truan-Sheng
PY - 2012/6
Y1 - 2012/6
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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U2 - 10.1179/1743133611Y.0000000034
DO - 10.1179/1743133611Y.0000000034
M3 - Article
AN - SCOPUS:84862608327
SN - 1364-0461
VL - 25
SP - 155
EP - 159
JO - International Journal of Cast Metals Research
JF - International Journal of Cast Metals Research
IS - 3
ER -