Fabrication of titanium carbide-reinforced iron matrix composites using electropulsing-assisted flash sintering

Xiang, Siqi; Ren, Shaofei; Liang, Yihan; Zhang, Xinfang

doi:10.1016/j.msea.2019.138459

Cited by 22 publications

(6 citation statements)

References 25 publications

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“…This configuration can apply higher pressure during flash sintering, and even if the internal alumina die is broken, it will not significantly affect the continuous application of pressure and the integrity of the sample. Fabrication of titanium carbide–reinforced iron matrix composites by flash sintering using high‐density pulsed current has been achieved by employing this configuration of the dies in our other work 17 . Also, some type of composite electrodes can be used in our flash sintering setup, for example, a shorter carbon steel electrode stacks a low thermal conductivity graphite part or other refractory metal parts (Figure B), which can reduce the temperature gradient or apply a higher pressure 45 …”

Section: Resultsmentioning

confidence: 99%

“…Since flash sintering was proposed in 2010, it has been tested and applied to a wide range of materials including ionic conductors, 1–9 semiconductors, 10–13 and some type of electronic conductors and insulators 14–18 . The most obvious advantage of flash sintering is that it greatly reduces the time, temperature, and energy required for ceramic densification, which means it has important significance and application prospects in the industry and has environmental benefits 19 .…”

Section: Introductionmentioning

confidence: 99%

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Pressure‐assisted flash sintering of ZnO ceramics

Liang

Xiang

et al. 2021

J Am Ceram Soc.

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Implementing pressure‐assisted flash sintering of ZnO powder without pretreatment by a new experimental configuration is presented. Rapid and energy‐concentrated heating of electrode‐sample‐electrode area by induction heating allows preheating and flash sintering of loose‐pack powder in the die with pressure assistance. Using an insulated die enables the current to flow through the sample during flash sintering. ZnO ceramics with a relative density of 95.1% can be achieved in less than 3 min. The whole process includes 104 s of preheating by a low‐power induction heating device and 30 s of flash sintering assisted by a pressure of 26 MPa using the pulsed direct current (DC). The process characteristics of pressure‐assisted flash sintering using the pulsed DC are discussed. The effect of pressure on densification and grain size is analyzed in detail, and some potential mechanisms are provided.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pressure‐assisted flash sintering of ZnO ceramics

Liang

Xiang

et al. 2021

J Am Ceram Soc.

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“…The hardness and bending properties increased with increasing WC content. TiC/Fe-based composites are commonly produced using powder metallurgical method [21][22][23][24]. This method result in good metal-ceramic interfaces.…”

Section: Introductionmentioning

confidence: 99%

Effect of TiCp volume fraction and WCp addition on the mechanical properties of TiCp/Cr8Mo2VSi composites

Wang,

Du,

Zhao

et al. 2024

Mater. Res. Express

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Titanium carbide particles (TiCp) is one of the most commonly used ceramic particles in ceramic- particle-reinforced metal matrix composites. The study prepared TiCp/Cr8Mo2VSi composites using the squeeze casting technique and investigated the effects of different TiCp volume fractions on the mechanical properties, including bending strength and impact toughness. Additionally, the study added tungsten carbide particles (WCp) powder to the preform to examine its effect on the mechanical properties of the composites. The study found that as the volume fraction of TiCp increased, the bending strength of the composites decreased gradually. The highest bending strength of 642.7 MPa was observed at 35% volume fraction. The impact toughness showed a small change, approximately 1.7 J/cm2. Upon the addition of WCp powder (with a mass fraction of 5.0 wt% and TiCp volume fraction of 50%), the bending strength and impact toughness of the composites were 375.2 MPa and 2.1 J/cm2, respectively. Compared to the composites without WCp powder (105.4 MPa, 1.7 J/cm2), the addition of WCp powder resulted in a 256.0% increase in bending strength and a 23.5% increase in impact toughness.

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“…The iron-based composites reinforced with hard ceramic particles (carbides, nitrides, metallic oxides, intermetallic compounds, etc. ), which possess an excellent hardness and wear resistance, have been applied in the automobile, aerospace, mining, metallurgy and civil engineering industries [ 1 , 2 , 3 , 4 , 5 ]. In situ VC particle reinforced iron-based composites were developed due to spontaneous growth of vanadium carbide during solidification [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

The Correlation Analysis of Microstructure and Tribological Characteristics of In Situ VCp Reinforced Iron-Based Composite

et al. 2021

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In this study, four kinds of heat treatments were performed to obtain a certain amount of retained austenite, which can result in good toughness and low brittleness accompanied with wear resistance of an in situ VC particle reinforced iron-based composite (VCFC). Microstructure, mechanical properties and wear resistance of the samples under heat treatment of QP, QPT, MQP and MQPT were compared. The experimental results indicated that there is a huge difference in microstructure between MQPT and the other heat treatments. High-proportion retained austenite and white net-like precipitates of M7C3 carbide existed in the MQPT-treated sample, but thick M7C3 carbide with brittleness was discovered in the other sample. Thereby, high-proportion retained austenite contributed to its low hardness of 634 HV and high tensile strength of 267 MPa, while a maximum hardness of 705.5 HV and a minimum tensile strength of 205 MPa were exhibited in the QPT-treated sample with a V-rich carbide of high hardness, a Cr-rich carbide of brittleness and a high-proportion martensite. Meanwhile, a phase transformation from retained austenite to martensite could increase the hardness and enhance wear resistance based on the transformation-induced plasticity (TRIP) effect; its wear rate was only 1.83 × 10−6 mm−3/(N·m). However, the wear rates of the samples under QP, QPT and MQP heat treatments increased by 16.4%, 44.3% and 41.0%, respectively. The wear mechanism was a synergistic effect of the adhesive wear mechanism and the abrasive wear mechanism. The adhesive wear mechanism was mainly considered in the MQPT-treated sample to reduce the wear rate attributed to high-proportion retained austenite and the existence of wear debris with a W element on the surface of the wear track. However, the abrasive wear mechanism could exist in the other samples because of a lot of thick, brittle M7C3, thereby resulting in a higher wear rate due to immediate contact between the designed material and the counterpart.

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Fabrication of titanium carbide-reinforced iron matrix composites using electropulsing-assisted flash sintering

Cited by 22 publications

References 25 publications

Pressure‐assisted flash sintering of ZnO ceramics

Pressure‐assisted flash sintering of ZnO ceramics

Effect of TiCp volume fraction and WCp addition on the mechanical properties of TiCp/Cr8Mo2VSi composites

The Correlation Analysis of Microstructure and Tribological Characteristics of In Situ VCp Reinforced Iron-Based Composite

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