Processing map for hot working of SiCp/7075 Al composites

Rajamuthamilselvan, M.; Ramanathan, S.; Karthikeyan, R.

doi:10.1016/s1003-6326(09)60196-5

Cited by 22 publications

(7 citation statements)

References 17 publications

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“…To more explain and justify, the Zener–Hollomon parameter based on hot deformation condition is calculated (Table 4). Table 3 indicates that the value of Z increase with strain rate and all the higher Z values correspond to the lower deformation temperature, indicating a higher degree of work hardening at a low temperature (Rajamuthamilselvan et al ., 2010); the Z value decreases with deformation temperature because of dynamic softening (Li et al ., 2016). As can be seen, the lower the Z is the bigger the grain size at all given temperatures results (Fig.…”

Section: Resultsmentioning

confidence: 99%

Hot deformation behaviour of bimodal sized Al₂O₃/Al nanocomposites fabricated by spark plasma sintering

Sadeghi

Cavaliere

Nosko

et al. 2020

Journal of Microscopy

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The deformation behaviour of bimodal sized Al 2 O 3 /Al nanocomposites were investigated by hot compression tests conducted in the temperature range 350-500°C and strain rates of 0.001, 0.01 and 0.1 s-1. The dynamic recrystallisation behaviour of the nanocomposites strongly depended on the forming parameters. The bimodal sized Al 2 O 3 particles played a crucial role in the recrystallised microstructure. The addition of bimodal sized Al 2 O 3 particles led to a significant increase of activation energy of plastic deformation, corroborating the enhanced resistance of the nanocomposite to hot deformation. This was also reflected by the increased compressive yield strength in the nanocomposite due to both dislocation strengthening caused by n-Al 2 O 3 and preventing the grain growth due to the presence of μ-Al 2 O 3 at grain boundaries. It was found that with the decrease of Z values, local strain induced by deformation was released and the grain size of aluminium matrix gradually increased, indicating that the main softening mechanism of the bimodal sized Al 2 O 3 /Al nanocomposites was dynamic recrystallisation (DRX). The lower the Z value was, the easier the DRX occurred. The highly beneficial role of the bimodal sized Al 2 O 3 reinforcement in improving the high-temperature performance of aluminium matrix nanocomposite was discussed.

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Section: Resultsmentioning

confidence: 99%

Hot deformation behaviour of bimodal sized Al₂O₃/Al nanocomposites fabricated by spark plasma sintering

Sadeghi

Cavaliere

Nosko

et al. 2020

Journal of Microscopy

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“…According to the fitting results, n=8.44, A=4.58×10 15 , and the correlation coefficient was 0.98. Thus, the hot deformation behaviour of the AA6061-10 vol.% SiC composite can be described by the hyperbolic sine model as Table 1 indicates that the value of Z increases with strain rate and all the higher Z values correspond to the lower deformation temperature, indicating a higher degree of work hardening at a low temperature [33]; the Z value decreases with deformation temperature because of dynamic softening [34,35].…”

Section: Kinetic Analysismentioning

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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“…Tirtom et al [ 18 ] characterized the strain-rate-dependent compression mechanical behavior of an SiC-particulate-reinforced Al (2024-O) metal matrix composite (MMC) with different particle volume fractions. Based on the processing map, Rajamuthamilselvan et al [ 19 ] researched the effect of temperature on the plastic behavior and microstructure evolution of 20%SiC/Al 7075 composite. Moćko et al [ 20 ] carried out experimental investigation on SiC/Al composites with 0%, 10%, 20%, and 30% SiC with a wide range of strain rates and large magnitudes of strains and modeled the deformation behavior.…”

Section: Introductionmentioning

confidence: 99%

Precise Modeling of Thermal and Strain Rate Effect on the Hardening Behavior of SiC/Al Composite

Wang

et al. 2022

Materials

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Temperature and strain rate have significant effects on the mechanical behavior of SiC/Al 2009 composites. This research aimed to precisely model the thermal and strain rate effect on the strain hardening behavior of SiC/Al composite using the artificial neural network (ANN). The mechanical behavior of SiC/Al 2009 composites in the temperature range of 298–623 K under the strain rate of 0.001–0.1 s−1 was investigated by a uniaxial tension experiment. Four conventional models were adopted to characterize the plastic flow behavior in relation to temperature, strain rate, and strain. The ANN model was also applied to characterize the flow behavior of the composite at different strain rates and temperatures. Experimental results showed that the plastic deformation behavior of SiC/Al 2009 composite possesses a coupling effect of strain, strain rate, and temperature. Comparing the prediction error of these models, all four conventional models could not provide satisfactory modeling of flow curves at different strain rates and temperatures. Compared to the four conventional models, the suggested ANN structure dramatically improved the prediction accuracy of the flow curves at different strain rates and temperatures by reducing the prediction error to a maximum of 4.0%. Therefore, the ANN model is recommended for precise modeling of the thermal and strain rate effect on the flow curves of SiC/Al composites.

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Processing map for hot working of SiCp/7075 Al composites

Cited by 22 publications

References 17 publications

Hot deformation behaviour of bimodal sized Al₂O₃/Al nanocomposites fabricated by spark plasma sintering

Hot deformation behaviour of bimodal sized Al₂O₃/Al nanocomposites fabricated by spark plasma sintering

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

Precise Modeling of Thermal and Strain Rate Effect on the Hardening Behavior of SiC/Al Composite

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Processing map for hot working of SiCp/7075 Al composites

Cited by 22 publications

References 17 publications

Hot deformation behaviour of bimodal sized Al2O3/Al nanocomposites fabricated by spark plasma sintering

Hot deformation behaviour of bimodal sized Al2O3/Al nanocomposites fabricated by spark plasma sintering

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

Precise Modeling of Thermal and Strain Rate Effect on the Hardening Behavior of SiC/Al Composite

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Hot deformation behaviour of bimodal sized Al₂O₃/Al nanocomposites fabricated by spark plasma sintering

Hot deformation behaviour of bimodal sized Al₂O₃/Al nanocomposites fabricated by spark plasma sintering