TY - JOUR
T1 - Structural analysis, mechanical and damping behaviour of Al-Zn based composites reinforced with Cu and SiC particles
AU - Alaneme, Kenneth Kanayo
AU - Ojomo, Abimbola Mary
AU - Bodunrin, Michael Oluwatosin
N1 - Publisher Copyright:
© K.K. Alaneme et al., Published by EDP Sciences 2022.
PY - 2022
Y1 - 2022
N2 - The structural characteristics, mechanical and damping properties of stir-cast Al-10 wt.% Zn based composites developed using 6 and 8 wt.% Cu, and 8 wt.% SiC particles as reinforcements, were investigated. The low porosity (<4%), near absence of dissolved Cu in the Al-Zn matrix, and marginal presence of melt reaction-induced intermetallic phases, attest to the soundness of the castings. Besides hardness, the strength parameters - ultimate tensile strength (149.33 MPa and 138.64 MPa) and specific strength (54.3 MPa cm3 g-1 and 51.16 MPa cm3 g-1) - of the Al-Zn composites reinforced with 6 and 8 wt.% Cu, were superior to that of the unreinforced Al-Zn alloy (103.47 MPa) and the 8 wt.% SiC reinforced composite (130.5 MPa). The fracture toughness (17.32 MPa m1/2 and 13.66 MPa m1/2) and percentage elongation (15% and 12.5%) of the 6 and 8 wt.% Cu reinforced Al-Zn composites, also surpassed that reinforced with SiC (KIC - 12.28 MPa m1/2; % ϵf - 9.5%). Improved matrix/particles interphase bonding and the inherent ductile and tough nature of Cu over SiC, were cited responsible for the improved strength-ductility-toughness balance of the Al-Zn/Cu composites over that reinforced with SiC. The damping properties were generally temperature sensitive, with all compositions exhibiting increase in damping capacity at test temperatures 100-200 °C.
AB - The structural characteristics, mechanical and damping properties of stir-cast Al-10 wt.% Zn based composites developed using 6 and 8 wt.% Cu, and 8 wt.% SiC particles as reinforcements, were investigated. The low porosity (<4%), near absence of dissolved Cu in the Al-Zn matrix, and marginal presence of melt reaction-induced intermetallic phases, attest to the soundness of the castings. Besides hardness, the strength parameters - ultimate tensile strength (149.33 MPa and 138.64 MPa) and specific strength (54.3 MPa cm3 g-1 and 51.16 MPa cm3 g-1) - of the Al-Zn composites reinforced with 6 and 8 wt.% Cu, were superior to that of the unreinforced Al-Zn alloy (103.47 MPa) and the 8 wt.% SiC reinforced composite (130.5 MPa). The fracture toughness (17.32 MPa m1/2 and 13.66 MPa m1/2) and percentage elongation (15% and 12.5%) of the 6 and 8 wt.% Cu reinforced Al-Zn composites, also surpassed that reinforced with SiC (KIC - 12.28 MPa m1/2; % ϵf - 9.5%). Improved matrix/particles interphase bonding and the inherent ductile and tough nature of Cu over SiC, were cited responsible for the improved strength-ductility-toughness balance of the Al-Zn/Cu composites over that reinforced with SiC. The damping properties were generally temperature sensitive, with all compositions exhibiting increase in damping capacity at test temperatures 100-200 °C.
KW - Al-Zn/Cup composite
KW - Damping capacity
KW - Interface bonding
KW - Mechanical properties
KW - Metallic reinforcement
KW - Microstructure
UR - http://www.scopus.com/inward/record.url?scp=85124701428&partnerID=8YFLogxK
U2 - 10.1051/mfreview/2022005
DO - 10.1051/mfreview/2022005
M3 - Article
AN - SCOPUS:85124701428
SN - 2265-4224
VL - 9
JO - Manufacturing Review
JF - Manufacturing Review
M1 - 5
ER -