Ti(C, N)-based cermets by vacuum sintering using Commercial Composite powders: Morphology evolution, Composition and related properties

Gan, Xueping; Xie, Dan; Yang, Qiu-Ming; Zhou, Kechao; Xiong, Huiwen

doi:10.1016/j.vacuum.2019.108983

Cited by 18 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the increase of temperature, more hard phase particles dissolve into the binder, and more W and Ti precipitate into the edge phase. This causes the diffraction peak to shift to a high angle [ 28 ]. With the increase of the holding time, the diffraction angle of all characteristic diffraction peak for (Ti,W,Mo,Ta)(C,N) phase and Ni/Co haven’t changed significantly.…”

Section: Resultsmentioning

confidence: 99%

Influence of Sintering Process on Microstructure and Mechanical Properties of Ti(C,N)-Based Cermet

Meng

Wang

et al. 2020

Materials

View full text Add to dashboard Cite

In this study, a Ti(C,N)-based cermet material was prepared through vacuum sintering. The research also investigates how holding time and maximum sintering temperature influence the material microstructure and mechanical properties. X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) were used to analyze the composition of the cermet. The microstructure of the cermet was analyzed and examined using a scanning electron microscope (SEM). A Vickers hardness tester was used to test the mechanical properties of the materials. As indicated by testing results, the hardness of the material decreases as the temperature of sintering increases, and its fracture toughness increases gradually as holding time increases. Ti(C,N)-based cermet manifested the optimal mechanical properties when sintering was conducted under 1400 °C with 80 min of holding time. Moreover, the material microstructure is significantly affected by the sintering process. The grain size of Ti(C,N) cermets increases as the sintering temperature increases. The microstructure tends to be uniform and the complete core-rim structures are established as the holding time increases.

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of Sintering Process on Microstructure and Mechanical Properties of Ti(C,N)-Based Cermet

Meng

Wang

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…Similarly, at the >850 • C sintering temperature, the phases, along with the phase content, of all three samples were almost the same as the raw mixed powders, as shown in Figure 4. The discussion about the solid-state sintering process covers the temperature range of 1200-1300 • C as metallurgy reaction under 1000 • C is still very limited [20]. Figure 5 exhibits the morphology and XRD patterns for all three cermets sintered a 1200 °C.…”

Section: Function Of Ultrafine Ticn In Microstructure and Phase Evolu...mentioning

confidence: 99%

Influences of Ultrafine Ti(C, N) on the Sintering Process and Mechanical Properties of Micron Ti(C, N)-Based Cermets

Zhao

et al. 2023

Materials

View full text Add to dashboard Cite

For investigating the influence mechanism underlying ultrafine Ti(C, N) within micron Ti(C, N)-based cermets, three cermets including diverse ultrafine Ti(C, N) contents were employed. In addition, for the prepared cermets, their sintering process, microstructure, and mechanical properties were systematically studied. According to our findings, adding ultrafine Ti(C, N) primarily affects the densification and shrinkage behavior in the solid-state sintering stage. Additionally, material-phase and microstructure evolution were investigated under the solid-state stage from 800 to 1300 °C. Adding ultrafine Ti(C, N) enhanced the diffusion and dissolution behavior of the secondary carbide (Mo2C, WC, and (Ta, Nb)C) under a lower sintering temperature of 1200 °C. Further, as sintering temperature increased, adding ultrafine Ti(C, N) enhanced heavy element transformation behaviors in the binder phase and accelerated solid-solution (Ti, Me) (C, N) phase formation. When the addition of ultrafine Ti(C, N) reached 40 wt%, the binder phase had increased its liquefying speed. Moreover, the cermet containing 40 wt% ultrafine Ti(C, N) displayed superb mechanical performances.

show abstract

“…Nevertheless, in general PRCMs are expected to possess more balanced characteristics in comparison with "usual" metallic materials. The majority of particle-reinforced composite materials are generated by the vacuum sintering method [21,22]. After sintering, the differences in the physical and chemical properties between the cores and rims have led to more complex interfacial stress distribution on the different interfaces of the composite materials; thus, the ability of the materials to resist crack propagation is reduced.…”

Section: Introductionmentioning

confidence: 99%

Prediction and Experimental Evaluation of Mechanical Properties of SiC-Reinforced Ti-4.25Al-2V Matrix Composites Produced by Laser Direct Energy Deposition

et al. 2023

View full text Add to dashboard Cite

An important direction in the development of additive technologies is associated with the addition of ceramic particles (oxide, carbide, boride, and nitride ceramics) to metal powders. The prediction of the physical and mechanical characteristics of SiC-particle-reinforced composite materials (PRCMs) in comparison with experimental results was studied. A near-α Ti-4.25Al-2V titanium-alloy-based composite reinforced by 1 vol.% of SiC ceramic particles was produced using laser direct energy deposition. A multiscale modeling approach at the micro and macro levels was applied. At the micro level, the toughness and strength characteristics for a temperature interval of T = 20–450 °C were predicted using a representative volume element of PRCM with the nearly real shape of SiC particles. At the macro level, the features of plastic deformation and fracture of the PRCM were predicted by numerical modeling using the commercial software Digimat Student Edition ver. 2022.4 and Ansys Student 2023 R2. The addition of SiC particles was found to improve the physical and mechanical properties in the whole temperature range. The results of the numerical modeling were consistent with the experimental data (the deviation did not exceed 10%). The proposed approach for predicting the physical and mechanical properties of Ti-4.25Al-2V/SiC can also be used for other PRCMs obtained by laser direct energy deposition.

show abstract

Ti(C, N)-based cermets by vacuum sintering using Commercial Composite powders: Morphology evolution, Composition and related properties

Cited by 18 publications

References 22 publications

Influence of Sintering Process on Microstructure and Mechanical Properties of Ti(C,N)-Based Cermet

Influence of Sintering Process on Microstructure and Mechanical Properties of Ti(C,N)-Based Cermet

Influences of Ultrafine Ti(C, N) on the Sintering Process and Mechanical Properties of Micron Ti(C, N)-Based Cermets

Prediction and Experimental Evaluation of Mechanical Properties of SiC-Reinforced Ti-4.25Al-2V Matrix Composites Produced by Laser Direct Energy Deposition

Contact Info

Product

Resources

About