Mechanical behavior of SiC reinforced ZA63 Mg matrix composites: Experiments and 3D finite element modelling

• DOI: 10.1016/j.jma.2024.03.027
• Publication Date: 2024-04-15T20:17:25Z
• Authors: Chong Wang; Zelong Du; Enyu Guo; Shuying Bai; Zongning Chen; Huijun Kang; Guohao Du; Yanling Xue; Tongmin Wang
• Keywords: Texture (cosmology); Elongation; Particle (ecology)

In this work, the microstructure evolution and mechanical behavior of extruded SiC/ZA63 Mg matrix composites are investigated via combined experimental study three-dimensional finite element modelling (3D FEM) based on actual 3D achieved by synchrotron tomography. The results show that average grain size composite increases from 0.57 µm 8 µm-SiC/ZA63 to 8.73 50 µm-SiC/ZA63. type texture transforms typical fiber in intense basal intensity sharply with increase SiC particle size. dynamic recrystallization (DRX) mechanism is also changed increasing Experimental simulation verify strength elongation both decrease possesses optimal property yield (YS) 383 MPa, ultimate tensile (UTS) 424 MPa 6.3%. outstanding attributed ultrafine size, high-density precipitates dislocation, good loading transfer effect interface bonding between matrix, as well weakened texture. reveal micro-cracks tend initiate at then propagate along or high strain stress regions, further connect other micro-cracks. main fracture ductile damage interfacial debonding. With decrease, debonding rupture become 30 µm- composites.