Development of processing maps for 6061 Al/15% SiCp composite material

Ganesan, G.; Raghukandan, K.; Karthikeyan, R.; Pai, B.C.

doi:10.1016/j.msea.2003.11.019

Cited by 97 publications

(32 citation statements)

References 20 publications

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“…The higher Q value in the composite is due to the effect of ultrafine SiC p which pins the motion of the dislocations and grain boundaries and raises the resistance stress of deformation. This value is also higher than that for AA6061-15% SiC p (215 kJ/mol) [28] and AA6061-20% SiC (195 kJ/mol) [29]. This may be attributed to the finer reinforcements and the higher strain rates in the present study.…”

Section: Kinetic Analysiscontrasting

confidence: 55%

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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Section: Kinetic Analysiscontrasting

confidence: 55%

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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“…The ideal objective is to produce the product with required microstructure and properties, without macro or microstructure defects. Besides strain rate sensitivity m, another important parameter applied for investigating the hot deformation is power dissipation (g) ( Ref 7,9,21,22), which is explicitly expressed in terms of m based on power law assumption: g = 2m/(m + 1). It is known from the test results on several materials that the maximization of g reduces the tendency of flow localization.…”

Section: Processing Mapmentioning

confidence: 99%

Constitutive Equation and Processing Map for Hot Deformation of SiC Particles Reinforced Metal Matrix Composites

Zhang

Wan

2010

J. of Materi Eng and Perform

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Flow behavior and microstructures of Al/15% SiCp were investigated by hot compression tests using Gleeble-1500 thermomechanical simulator at temperatures ranging from 440 to 500°C with strain rates of 0.001-1.0 s 21 . The high-temperature deformation behaviors of Al/15% SiCp were analyzed based on the true stress-true strain curves. The results show that the softening mechanism at low strain rate (0.001 s 21 ) is dynamic recovery, and at high strain rates (0.01, 0.1, and 1 s 21 ) is dynamic recrystallization (DRX). Based on these experimental data, a set of constitutive equations for Al/15% SiCp are described by the Zener-Hollomon parameter, and the coefficients of equations are found to be functions of strain. The constitutive equations reveal the dependence of flow stress on strains, strain rates, and temperatures. Furthermore, the mean error between the experimental and the calculated flow stress was computed. The result shows that the calculated results from constitutive equations are in good agreement with the experimental results. To demonstrate the potential workability of Al/15% SiCp, the processing map was established. The stable zones and the instability zones in processing map are identified and verified through micrographs. As a result, the optimum strain rates and temperatures for effective hot working of Al/15% SiCp were determined.

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“…The deformation mechanisms of the safe regimes include dynamic recovery, DRX and superplasticity, which are desirable processes during hot working of a uniform billet. In fact, DRX was shown to be a more efficient process to keep the flow stresses and rates of work hardening considerably low [23], which is thought to be a preferred choice for hot working. Generally, the efficiency values associated with DRX are about 30-50%, while the values related to superplasticity are very high (about 60%) [24][25][26].…”

Section: Interpretation Of the Processing Mapmentioning

confidence: 99%

Hot working characteristics and dynamic recrystallization of delta-processed superalloy 718

Wang

Zhen

Shao

et al. 2009

Journal of Alloys and Compounds

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Development of processing maps for 6061 Al/15% SiCp composite material

Cited by 97 publications

References 20 publications

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

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

Constitutive Equation and Processing Map for Hot Deformation of SiC Particles Reinforced Metal Matrix Composites

Hot working characteristics and dynamic recrystallization of delta-processed superalloy 718

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