Microstructure and thermal/mechanical properties of hot-extruded aluminum/graphite composites with Al–Si alloy addition

Yi, Li-Fu; Yoshida, Noriaki; Yamamoto, Takashi; Onda, Tetsuhiko; Chen, Zhongchun

doi:10.1007/s10853-019-03583-9

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…The resistance to damage is weak, as well as the resistance to high heat and low temperature, and the resistance to organic chemical media (especially oxidizing media, surfactants). Surface energy and creep characteristics affect seal ability of the connection of the steel-plastic conversion parts [3,4].…”

Section: Introductionmentioning

confidence: 99%

Study on Structural Aging and Gas Leakage Failure Behavior of Electrofusion Socket of Buried Polyethylene Gas Pipes

Gao¹,

Tian²,

Luo³

et al. 2023

J. Phys.: Conf. Ser.

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Based on two samples of gas leakage cases of the PE electrofusion socket for gas distribution systems within 22 and 25 years of service respectively, it was analyzed that the apparent performance and structural aging performance of electrofusion socket. The results suggested that it was happened to PE electrofusion socket of aging, decrease of thermo-oxidative stability and crystallinity, thus resulting in significant deterioration of structural performance in comparison to the pipe wall. In order to clarify the structural weakness of gas leakage, the failure analysis was carried out.

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Section: Introductionmentioning

confidence: 99%

Study on Structural Aging and Gas Leakage Failure Behavior of Electrofusion Socket of Buried Polyethylene Gas Pipes

Gao¹,

Tian²,

Luo³

et al. 2023

J. Phys.: Conf. Ser.

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“…Metal matrix composites (MMCs), especially those based on light metals such as aluminum alloys, have become an indispensable lightweight structural material in high-tech areas such as defense aerospace and military equipment due to its advantages of light mass, high strength, well thermal stability, wear resistance and low thermal expansion coefficient [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. However, MMCs have low elongation, poor plastic forming ability and low material utilization, making it difficult to form complex parts, which is the most important reason to limit their application [ 13 , 14 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Research on the Secondary Forgeability of High Volume Fraction Whisker Reinforced Aluminum Matrix Composites of Original Squeeze Casting

Lin

Wang

et al. 2021

Materials

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The poor formability of high volume fraction whisker reinforced aluminum matrix composites of original squeeze casting is an important factor restricting its further development and application. Currently, there are no reports on the secondary forgeability of aluminum matrix composites of original squeeze casting, although some papers on its first forgeability are published. The secondary forgeability is very important for most metals. This study aims to investigate the secondary forgeability of aluminum matrix composites. In this study, the secondary upsetting experiments of 20 vol% SiCw + Al18B4O33w/2024Al composites, treated by the original squeeze casting and extrusion, were carried out. The first upsetting deformation is close to the forming limit, the secondary upsetting deformation under the same deformation conditions was carried out to investigate the secondary forgeability. The experimental results show that, unlike aluminum alloys, the 20 vol% SiCw + Al18B4O33w/2024Al composites at the original squeeze casting and extrusion states have no secondary forgeability due to the whisker rotating and breaking during the secondary upsetting. The high volume fraction whisker reinforced aluminum matrix composites of original squeeze casting cannot be formed by the multiple-forging method since the cavities and cracks caused by whisker fracture continue to expand during secondary processing, which leads to further extension of macroscopic cracks.

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“…Meanwhile, solid lubricants are widely used to improve the tribological behavior of metal matrix composites. Graphite is a typical solid lubricant used in the fabrication of composites as it reduces the frictional forces and enhances the tribological properties [16,17]. Zhu et al [18] observed that solid lubricant particles WS2 in spark-plasma-sintered SiC-WS2-Mg composites spread on the surface, forming a tribolayer during the reciprocating sliding.…”

Section: Introductionmentioning

confidence: 99%

Tribological characteristics of friction stir processed graphite and tin/LM24 surface composites

2020

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Friction stir processing (FSP) is an emerging solid-state technique for preparing surface composites using various reinforcements. Ceramics and metallic particles are easily reinforced in a matrix by this technique. Surface composites made from an LM24 alloy reinforced with graphite and tin, with good wettability and material flow owing to the low melting point of tin, were fabricated by FSP at two rotational speeds of 1,400 and 1,000 rpm. Despite its low hardness, the graphite/LM24 surface composite fabricated at a higher rotational speed of 1,400 rpm exhibited better wear resistance. However, its frictional behavior was not significantly affected by the reinforcement. The fabricated surface composites with graphite and tin reinforcement as well as graphite-only reinforcement exhibited contradicting behaviors under sliding wear conditions. The post wear analysis indicated that abrasion, adhesion, layer formation, and delamination occurred on the composite surfaces.

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Microstructure and thermal/mechanical properties of hot-extruded aluminum/graphite composites with Al–Si alloy addition

Cited by 10 publications

References 23 publications

Study on Structural Aging and Gas Leakage Failure Behavior of Electrofusion Socket of Buried Polyethylene Gas Pipes

Study on Structural Aging and Gas Leakage Failure Behavior of Electrofusion Socket of Buried Polyethylene Gas Pipes

Research on the Secondary Forgeability of High Volume Fraction Whisker Reinforced Aluminum Matrix Composites of Original Squeeze Casting

Tribological characteristics of friction stir processed graphite and tin/LM24 surface composites

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