The design, microstructure and tensile properties of B4C particulate reinforced 6061Al neutron absorber composites

Chen, H.S.; Wang, W.X.; Li, Yuli; Zhang, P.; Nie, Hui hui; Wu, Qiao-Chu

doi:10.1016/j.jallcom.2015.01.048

Cited by 144 publications

(26 citation statements)

References 29 publications

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“…(7) and the linear fitting plot of lnZ-ln(sinh( p )), as illustrated in Figure 8, the slope of the fitting line was n and the intercept was lnA. 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: 92%

“…Figure 3 shows that the sufficient densification structure with very few voids was obtained in the composite after spark plasma sintering at 560°C and 50 MPa for 3 min. Chen et al [15] prepared an AA6061-B 4 C composite with full densification via traditional vacuum hot pressing at 640°C under 120 MPa for 2.5 h, which indicates that SPS has a lower sintering temperature and a shorter sintering time. The EBSD inverse pole figure (IPF) of AA6061 prepared by SPS at the same conditions is shown in Figure 4.…”

Section: Initial Micro-morphologymentioning

confidence: 99%

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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 Analysismentioning

confidence: 92%

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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“…property of B 4 C owing to its neutron absorption cross section. Reports suggest the usage of Ethylene propylene diene monomer (EPDM Rubber) with boron trioxide to shield effectively the neutron particles irradiation [45].…”

Section: Attenuation Studiesmentioning

confidence: 99%

“…Numerous researchers have reported the suitability of polymer composites in the field of radiation protection by considering a variety of polymer as matrix and fillers as reinforcements [9]. It should be also taken into account that energy needs of the globe is catered by adopting several measures internationally owing to the huge increase in economic growth as well as the growth in the population density [10][11] Around the globe, countries internationally promote the usage of nuclear power as a theme of sustainable development because of the absence of harmful by-products such as CO2, CO, NOx and other harmful greenhouse gases.…”

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confidence: 99%

Metallic Additives Dispersed Polymer Composites for Irradiation Shielding- A Novel Critique

2019

IJITEE

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Ionizing radiation finds its part in a wide spectrum of fields such as medicine, industry and research. These radiations in the form of alpha, beta, neutron particles, gamma and X-rays are very dangerous for not only humans but also for biotic and abiotic environments. The present article briefly works out the irradiation shielding ability of some potential composite materials to recognize the shielding tendency and enabling the same to find some promising applications in defense as well as nuclear research. The physics of irradiation decay and shielding is appraised in this critique. This review article studies about various materials employed for the attenuation of nuclear radiations and their response in terms of attenuation rates (I/I0 ) after exposure to the radiation. The study also focuses on the mechanical performance of the shielding materials meticulously for the application of dry storage of the spent fuel possessing a potential threat of radiation hazards. Moreover the evolution of composite materials in the structural applications is contemplated.

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“…Researchers have already studied some aspects of B 4 Cp/Al composites, including the preparation, interfacial reaction [5] , microstructure and mechanical properties [6,7] . However, the literature on hot workability and flow characteristics of B 4 Cp/Al composites is quite limited.…”

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confidence: 99%

Constitutive Analysis to Predict High-Temperature Flow Stress of 25vol% B 4 Cp/2009Al Composite

Liu

et al. 2017

Rare Metal Materials and Engineering

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Isothermal compression tests of 25vol% B4Cp/2009Al composite have been carried out at temperatures ranging from 300 º C to 500 º C and strain rates ranging from 0.001 s-1 to 1 s-1. The results show that high-temperature flow stress of the composite decreases with the increase of deformation temperature and the decrease of strain rate. The flow stress has been corrected by friction and the friction corrected stress is lower than experimental values. The influence of friction becomes more obvious with decreasing temperature and increasing strain rate. Then a constitutive equation considering the effect of strain on material constants (i.e. α, n, Q and A) is developed on the basis of Arrhenius type equation. Compared with the experimental results, the flow stress calculated by the constitutive equation possesses a high precision with the correlation coefficient of 0.992. Higher temperature and lower strain rate is beneficial to hot deformation of B4Cp/2009Al composite.

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The design, microstructure and tensile properties of B4C particulate reinforced 6061Al neutron absorber composites

Cited by 144 publications

References 29 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

Metallic Additives Dispersed Polymer Composites for Irradiation Shielding- A Novel Critique

Constitutive Analysis to Predict High-Temperature Flow Stress of 25vol% B 4 Cp/2009Al Composite

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