TY - GEN
T1 - Effect of hybrid reinforcement on crack initiation and propagation mechanism in metal matrix composites during low cycle fatigue
AU - Asif Iqbal, A. K.M.
AU - Arai, Yoshio
AU - Araki, Wakako
PY - 2012
Y1 - 2012
N2 - Microcrack initiation and propagation mechanism during low cycle fatigue were studied in three types of materials; Hybrid MMC, MMC with Al2O3 whiskers and Al alloy and the role of hybrid reinforcement was examined. The microcracks initiated at the boundary between Si particles cluster and Al grain in case of Al alloy but the initiation location changed to the interface of whisker-matrix and particle-matrix when reinforcements were added to the matrix. Moreover, microcracks initiated very early in the fatigue life of hybrid MMC compare to other two materials. Besides, interface debonding followed by void nucleation dominates the fracture of MMCs whereas fracture occurs in Al alloy due to the formation of voids and plastic slip.
AB - Microcrack initiation and propagation mechanism during low cycle fatigue were studied in three types of materials; Hybrid MMC, MMC with Al2O3 whiskers and Al alloy and the role of hybrid reinforcement was examined. The microcracks initiated at the boundary between Si particles cluster and Al grain in case of Al alloy but the initiation location changed to the interface of whisker-matrix and particle-matrix when reinforcements were added to the matrix. Moreover, microcracks initiated very early in the fatigue life of hybrid MMC compare to other two materials. Besides, interface debonding followed by void nucleation dominates the fracture of MMCs whereas fracture occurs in Al alloy due to the formation of voids and plastic slip.
KW - Low cycle fatigue
KW - Metal matrix composites (MMCs)
KW - Microcrack initiation
KW - Microrack propagation
UR - http://www.scopus.com/inward/record.url?scp=84904015811&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84904015811
SN - 9788888785332
T3 - ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
BT - ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
PB - European Conference on Composite Materials, ECCM
T2 - 15th European Conference on Composite Materials: Composites at Venice, ECCM 2012
Y2 - 24 June 2012 through 28 June 2012
ER -