Hot Deformation Characteristics and Microstructure Evolution of SiCp/Al2014 Composite Fabricated by Powder Metallurgy

Dong, Cuige; Wang, Richu; Zhou, Lingping

doi:10.1007/s11665-021-06151-y

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…To enhance the mechanical properties of composites, hot-working processing techniques, such as hot rolling [18], hot extrusion [19], and die forging, [20] can be employed. In recent years, extensive research has been conducted on the hot deformation behavior of composites, which has provided fundamental theoretical guidance for their hot working [21][22][23][24]. Generally, particles can stimulate nucleation on recrystallization, making the composites form a uniform and fine recrystallization microstructure during deformation [3,25].…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior and Mechanisms of SiC Particle Reinforced Al-Zn-Mg-Cu Alloy Matrix Composites

Diao,

Fan,

Yang

et al. 2023

Materials

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A systematic and comprehensive analysis of the hot deformation and mechanisms of SiC particle-reinforced aluminum matrix composites is significant for optimizing the processing of the composites and obtaining the desired components. Based on this, related research on 11 vol% SiCp particle-reinforced 7050Al matrix composites was carried out. Hot compression experiments were carried out on the Gleeble-3500 thermal simulator to study the hot deformation behavior of composites at the temperature of 370–520 °C and strain rate of 0.001–10 s−1. The hyperbolic sine constitutive equation of the material was established, and the processing map was calculated. Combining the typical metallograph and misorientation angle distribution, the microstructure evolution mechanism of composites was analyzed, and the effect of particles on recrystallization behavior was investigated. Under certain process conditions, the dominant deformation mechanism of composites changed from dynamic recovery (DRV) to dynamic recrystallization (DRX), and the grain boundary sliding mechanism began to play a role. In addition, high temperature tensile and elongation at break were tested, and it was found that the dominant form of fracture failure changed from brittle fracture of the particles to ductile fracture of the matrix as the temperature increased.

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