Study on fracture behavior of particulate reinforced magnesium matrix composite using in situ SEM

Wang, Xiaojun; Wu, Kun; Huang, WH; Zhang, H.F.; Zheng, M.Y.; Peng, Dequn

doi:10.1016/j.compscitech.2007.01.022

Cited by 95 publications

(30 citation statements)

References 21 publications

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“…In addition, there are many cavities and other defects formed during their solidification because melts contain dissimilar particles [5]. Thus, secondary deformation is often used to redistribute particles and eliminate cast defects [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of extrusion temperatures on microstructure and mechanical properties of SiCp/Mg–Zn–Ca composite

Wang

Nie

et al. 2012

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Effect of extrusion temperatures on microstructure and mechanical properties of SiCp/Mg–Zn–Ca composite

Wang

Nie

et al. 2012

Journal of Alloys and Compounds

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“…10-8.5 composite had been given in the previous work [21]. It is demonstrated that both the submicron and micron SiCp were segregated at grain boundaries, exhibiting a typical necklace distribution [21], which was supposed to be resulted from the pushing effect by liquid-solid interface during solidification process [22,23]. This kind distribution of submicron and micron SiCp is similar to the single-sized 10 lm SiCp/AZ91 composite in Ref.…”

Section: Drx Behavior Based On Microstructure Analysismentioning

confidence: 53%

Dynamic Recrystallization Behavior of Bimodal Size SiCp-Reinforced Mg Matrix Composite during Hot Deformation

Wang

Deng

Zhou

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

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The (submicron ? micron) bimodal size SiCp-reinforced Mg matrix composite was compressed at the temperature of 270-420°C and strain rate of 0.001-1 s -1 . Then, dynamic recrystallization (DRX) behavior of the composite was investigated by thermodynamic method and verified by microstructure analysis. Results illustrated that the composite possess the lower critical strain and higher DRX ratio as compared to monolithic Mg alloys during hot deformation process. The predicted DRX ratio increased with the proceeding of compression, which was well consistent with the experimental value. Results from thermodynamic calculation suggested that the occurrence of DRX could be promoted by SiCp, which would be further proved by microstructure analysis. Formation of particle deformation zone around micron SiCp played a significant role in promoting DRX nucleation. Nevertheless, the distribution of submicron SiCp was increasingly uniform with the proceeding of compression, which could fully restrain grain growth. Therefore, the corporate effects of micron and submicron SiCp on DRX contributed to the improvement of DRXed ratio and the refinement of grain size for the composite during compression process.

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“…Figure 5(a)-(e) indicates that peak stress value is reduced with the increase of deformation temperature. It is well documented that the increasing deformation temperature leads to the decreasing critical resolved shear stresses (CRSS) for basal and non-basal slip [19]. Besides, higher temperatures provide extra energy, which lead to the nucleation and growth of dynamically recrystallized grains and dislocation annihilation.…”

Section: Initial Micro-morphologymentioning

confidence: 99%

Hot deformation behaviour and processing maps of AA6061-10 vol.% SiC composite prepared by spark plasma sintering

Liu

Sun³

et al. 2016

Sci. China Technol. Sci.

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AA6061-10 vol.% SiC composite was successfully prepared by spark plasma sintering. The deformation behaviour of this composite was studied using the uniaxial compression test, which was conducted at temperatures between 300 and 500°C and strain rates between 0.001 and 1 s −1 . Results indicate that the stress-strain curves of the AA6061-10 vol.% SiC composite typically feature dynamic recrystallization. The steady stress can be described by a hyperbolic sine constitutive equation, and the activation energy of the composite is 230.88 kJ/mol. The processing map was established according to the dynamic materials model. The optimum hot deformation temperature is 450-500°C and the strain rate is 1-0.1 s −1 . The instability zones of flow behaviour can also be identified using the processing map.Al matrix composite, hot deformation, processing map, stress-strain curves, spark plasma sintering Citation:Li X P, Liu C Y, Sun X W, et al. Hot deformation behaviour and processing maps of AA6061-10 vol.% SiC composite prepared by spark plasma sintering. Sci China Tech Sci, 2016, 59: 980988,

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Study on fracture behavior of particulate reinforced magnesium matrix composite using in situ SEM

Cited by 95 publications

References 21 publications

Effect of extrusion temperatures on microstructure and mechanical properties of SiCp/Mg–Zn–Ca composite

Effect of extrusion temperatures on microstructure and mechanical properties of SiCp/Mg–Zn–Ca composite

Dynamic Recrystallization Behavior of Bimodal Size SiCp-Reinforced Mg Matrix Composite during Hot Deformation

Hot deformation behaviour and processing maps of AA6061-10 vol.% SiC composite prepared by spark plasma sintering

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