Hot deformation behavior and processing maps of hybrid SiC and CNTs reinforced AZ61 alloy composite

Zhou, Mingyang; Liu, Xiaohui; Yue, Huifang; Liu, Shichao; Ren, Lingbao; Xin, Yong; Lyu, Liangliang; Zhao, Yanli; Quan, Gaofeng; Gupta, Manoj

doi:10.1016/j.jallcom.2021.159098

Cited by 23 publications

(8 citation statements)

References 32 publications

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Section: Resultsmentioning

confidence: 99%

“…44 Secondly, at higher strain rates, available time for DRX and DRV occurrence is insufficient, which restricts softening effects, and DRX is not completed, leading to accumulating dislocation density in the sample resulting in high flow stress. 45 Furthermore, flow stress reduces remarkably as temperature increases which can be due to the intrinsic properties of magnesium. At room temperature, the independent slip basal slip systems and mechanical twinning play a vital role in the deformation behavior of Mg alloys because these deformation mechanisms have lower critical shear stress (CRSS) compared to the prismatic and pyramidal slip systems to activate.…”

Section: Flow Stress Curvesmentioning

confidence: 99%

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Hot deformation behavior and processing map development of Mg/Al₂O₃ composite: A case study of extrusion ratio effects

Delavar

Kasaeian-Naeini

Sedighi

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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The hot deformation behavior of 2.5 wt.% submicron alumina reinforced magnesium composite manufactured by a new casting method was examined to assess the impact of extrusion ratio and initial microstructure on the hot workability of Mg/Al2O3 composite. The thermomechanical experiments were performed at strain rates from 0.001 s−1 to 0.05 s−1 and the temperature ranging from 523 K to 673 K. The processing map was developed using power dissipation efficiency in terms of temperature and strain rate. Results revealed that the higher extrusion ratio yields finer grain size and a more homogenous distribution of alumina particles resulting in lower flow stress and activation energy. Stable regions with more power efficiency (57%) and less instability were observed in materials that experienced higher strain. Based on the microstructural observation, dynamic recrystallization as the main restoration mechanism occurred at composite with a higher extrusion ratio and finer grains in all conditions. It was deduced that the enhanced workability of fine-grain material is confirmed by steady flow stress and safe zones of the processing map. It was also revealed that twinning–twinning intersection and flow localization are the main reasons for unstable flow in both samples with unlike grain sizes.

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Section: Resultsmentioning

confidence: 99%

Section: Flow Stress Curvesmentioning

confidence: 99%

Hot deformation behavior and processing map development of Mg/Al₂O₃ composite: A case study of extrusion ratio effects

Delavar

Kasaeian-Naeini

Sedighi

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Zhou et al [97] studied the hot deformation behaviour of SiC and CNT-reinforced AZ61 magnesium alloy through the hot compacting process. The hybrid composite material was manufactured utilising the powder metallurgy [PM] process followed by hot extrusion; the detailed procedure was followed as stated in reference [100].…”

Section: A Review Of the Effects Of Various Nanoparticle Reinforcemen...mentioning

confidence: 99%

Manufacturing and characterisation of magnesium composites reinforced by nanoparticles: A review

Monish¹,

KL²,

Rajkumar³

2023

Materials Science and Technology

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Magnesium metal matrix composites (Mg-MMC) are versatile materials notable for their utilisation in automotive, aerospace, and manufacturing sectors due to their superior mechanical properties and high specific strength. Nanoparticle reinforcements at varying concentrations are used to improve the mechanical and tribological properties of the Mg alloy. In this paper, the effects of varying nanoparticles (namely silicon carbide, carbon nanotubes, titanium nanoparticles, and tungsten carbide) on different Mg alloys are discussed along with relevant manufacturing processes. From the literatures, Mg-MMCs are fabricated from AZ91 alloy with silicon carbide nanoparticle reinforcement of 1 wt-% composition, manufactured using ultrasonic-assisted stirring, which showed the best relationship in overall material properties over other nanoparticle reinforcements.

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“…Therefore, it is necessary to study the hot processing properties of ceramic particle-reinforced aluminum matrix composites. In recent years, most studies concerned single-particle and hybrid-particle-reinforced aluminum matrix composites, where the reinforced particles were mostly in the range of tens of micrometers [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. For instance, Shao et al [ 24 ] studied constitutive flow behavior and hot workability of powder metallurgy processed 20 vol.%SiCp/2024Al composites.…”

Section: Introductionmentioning

confidence: 99%

Hot Workability of the Multi-Size SiC Particle-Reinforced 6013 Aluminum Matrix Composites

Chen

Tang

et al. 2023

Materials

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The size and distribution of ceramic particles in aluminum matrix composites have been reported to remarkably influence their properties. For a single ceramic particle, the particle size is too small and prone to agglomeration, which makes the mechanical properties of the composites worse. When the ceramic particle size is too large, the particles and alloy at the interface are not firmly bonded, and the effect of dispersion distribution is not achieved, which will also reduce the mechanical properties of the composites. The multi-size ceramic particles are expected to improve this situation, while their effect on hot workability is less studied. In this study, the hot deformation behavior, constitutive model, processing map and SEM microstructure were investigated to evaluate the hot workability of multi-size SiC particle-reinforced 6013 aluminum matrix composites. The results showed that the increased deformation temperature and decreased strain rate could decrease flow stresses. The flow stress behaviors of the composites can be described by the sine-hyperbolic Arrhenius equation with the deformation activation energy of Q = 205.863 kJ/mol. The constitutive equation of the composites is ε ˙=3.11592×1013sinh0.024909σ4.12413exp−205863RT. Then, the hot processing map of the SiCp/6013 composites was constructed and verified by SEM observations. The rheological instability zone was in the region of a high strain rate. The optimal processing zone for composites was 450~500 °C and 0.03~0.25 s−1. In addition, the strain level was found to increase both the Q value and the area of the instability zone.

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Hot deformation behavior and processing maps of hybrid SiC and CNTs reinforced AZ61 alloy composite

Cited by 23 publications

References 32 publications

Hot deformation behavior and processing map development of Mg/Al₂O₃ composite: A case study of extrusion ratio effects

Hot deformation behavior and processing map development of Mg/Al₂O₃ composite: A case study of extrusion ratio effects

Manufacturing and characterisation of magnesium composites reinforced by nanoparticles: A review

Hot Workability of the Multi-Size SiC Particle-Reinforced 6013 Aluminum Matrix Composites

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Hot deformation behavior and processing maps of hybrid SiC and CNTs reinforced AZ61 alloy composite

Cited by 23 publications

References 32 publications

Hot deformation behavior and processing map development of Mg/Al2O3 composite: A case study of extrusion ratio effects

Hot deformation behavior and processing map development of Mg/Al2O3 composite: A case study of extrusion ratio effects

Manufacturing and characterisation of magnesium composites reinforced by nanoparticles: A review

Hot Workability of the Multi-Size SiC Particle-Reinforced 6013 Aluminum Matrix Composites

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Hot deformation behavior and processing map development of Mg/Al₂O₃ composite: A case study of extrusion ratio effects

Hot deformation behavior and processing map development of Mg/Al₂O₃ composite: A case study of extrusion ratio effects