Study of spark plasma sintered nanostructured ferritic steel alloy with silicon carbide addition

Hu, Zhihao; Ning, Kaijie; Lu, Kathy

doi:10.1016/j.msea.2016.06.003

Cited by 33 publications

(8 citation statements)

References 40 publications

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“…The lower Vickers hardness for the NFA-SiC composite samples can be understood as follows. The hardness of iron (4 GPa [34,35]) is much lower than that of SiC (25)(26)(27)(28)(29)(30)31,33]). Thus, the NFA-SiC composites with even a small amount of NFA addition would lower the hardness.…”

Section: Densificationmentioning

confidence: 95%

Spark plasma sintered silicon carbide ceramics with nanostructured ferritic alloy as sintering aid

Ning

2017

Materials Science and Engineering: A

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Nanostructured ferritic alloy-silicon carbide composites (NFA-SiC) were sintered at 1950°C-2100°C by spark plasma sintering (SPS). The influence of NFA addition on the sintered NFA-SiC composites has been investigated based on densification, phase, microstructure, and mechanical property. Addition of 2.5 vol% NFA can lead to full densification for the NFA-SiC composites even though it also introduces secondary carbonrich and iron-rich phases. With the increase of the sintering temperature, the Vickers hardness for the pure SiC and NFA-SiC composite samples is enhanced. However, the NFA-SiC composites have lower hardness than the pure SiC samples. The flexural strength for the pure SiC is also higher than that of the NFA-SiC composites. Nanohardness results demonstrate that the reaction products between SiC and NFA lower the mechanical properties of the NFA-SiC samples.

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Section: Densificationmentioning

confidence: 95%

Spark plasma sintered silicon carbide ceramics with nanostructured ferritic alloy as sintering aid

Ning

2017

Materials Science and Engineering: A

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“…Th ey reported reduced grain size, increased dislocation density in the matrix, increased formation of the Fe 3 C phase with increased CNT content, and higher hardness but reduced strength in bending; probably due to poor bonding between the 316L matrix and CNTs. Hu et al [49] investigated a possible fusion reactor wall cladding material by using FAST to produce a nanostructured ferritic steel alloy with 2.5 or 5.0 wt-% SiC additions to reinforce the steel alloy matrix for improved high-temperature properties, while maintaining an inherent resistance to radiation. They reported increased density with increased FAST temperature but decreased density with increased SiC content.…”

Section: Multi Materials Systemsmentioning

confidence: 99%

Processing metal powders via field assisted sintering technology (FAST): A critical review

Weston

Thomas

Jackson

2019

Materials Science and Technology

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The current status of field assisted sintering technology (FAST) of structural metals from powder is critically reviewed. Recently, there have been significant increases in the uptake of FAST for metallic systems, composites and porous materials at the laboratory-scale. It is clear that FAST is tolerant of powder/particulate feedstock, allowing rapid production of materials, some of which would be challenging through conventional sintering techniques. Yet, the underlying mechanisms allowing this are not fully understood. Final specimen sizes tend to be small, which restricts rigorous mechanical assessment. This review demonstrates the clear benefits in transitioning laboratory-scale demonstrators to the industrial scale over the next few years. However, consideration will need to be given to size, throughput, and shape complexities to attract commercial investment.

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“…In addition, SiC is inexpensive and easily available. The variety of advantages make SiC a promising reinforcement for use in manufacturing particle-reinforced metal matrix composites, and this has been widely used to strengthen various metal materials [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cu-adhered silicon carbide particles and its effect on properties of Fe-based matrix composites

Jin

Zhou

2022

Mater. Res. Express

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In present study, copper powders (Cu) and silicon carbide (SiC) particles were used to produce Cu-adhered SiC particles (Cu/SiC), which were used to reinforce Fe-based matrix materials to modify properties. The orthogonal experimental design was used to investigate the relationship between ball mill parameters and particle size. Next, the mixed powders were pressed at 500 MPa using a hydraulic press. Then, the green compacts were wrapped in graphite powders, and sintered using a resistance furnace. Metallurgical microscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction were employed to investigate the microstructures, element distribution, and phase of SiC-reinforced Fe-based matrix composites. The properties of the SiC-reinforced metal matrix composites were determined using the Microhardness test and Charpy pendulum impact test. The orthogonal experimental results indicated that the influence degree of milling parameters on particle size was the powder to ball ratio>milling time>milling speed. The milling parameters to obtain the smallest Cu/SiC particle were powder to ball ratio of 20:1, milling time of 15 hours, and milling speed of 300 r/min. However, the adhesive effect was bad. The properties test results indicated that Cu/SiC particles reinforced with Fe matrix composites had better properties. Furthermore, the hardness and impact toughness improved up to 239.97 HV0.5 and 12.1 KJ·m-2, respectively. Moreover, compared to raw SiC particles, the hardness and impact toughness increased by 12% and 15%, respectively. The improvement in properties was attributed to the Cu adhesion to the SiC surface, which effectively alleviated the difference in thermal expansion coefficient between SiC and Fe, and formed a chemical bond at the interface to improve the interfacial binding

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Study of spark plasma sintered nanostructured ferritic steel alloy with silicon carbide addition

Cited by 33 publications

References 40 publications

Spark plasma sintered silicon carbide ceramics with nanostructured ferritic alloy as sintering aid

Spark plasma sintered silicon carbide ceramics with nanostructured ferritic alloy as sintering aid

Processing metal powders via field assisted sintering technology (FAST): A critical review

Fabrication of Cu-adhered silicon carbide particles and its effect on properties of Fe-based matrix composites

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