Mechanisms of simultaneously enhanced strength and ductility of titanium matrix composites reinforced with nanosheets of graphene oxides

Dong, Longlong; Xiao, Bing; Jin, Lei; Lu, Jiping; Liu, Y.; Fu, Yong Qing; Zhang, Yongqing; Wu, Guanglei; Zhang, Y.S.

doi:10.1016/j.ceramint.2019.06.189

Cited by 45 publications

(9 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because the large agglomerated GO weakens the interface and reduces the density of composite. These results are in good agreements with the reported for GO-reinforced pure Ti-matrix composites [ 35 ].…”

Section: Resultssupporting

confidence: 92%

Microstructure and Tensile Properties of Graphene-Oxide-Reinforced High-Temperature Titanium-Alloy-Matrix Composites

Chen

et al. 2020

Materials

View full text Add to dashboard Cite

In this study, graphene-oxide (GO)-reinforced Ti–Al–Sn–Zr–Mo–Nb–Si high-temperature titanium-alloy-matrix composites were fabricated by powder metallurgy. The mixed powders with well-dispersed GO sheets were obtained by temperature-controlled solution mixing, in which GO sheets adsorb on the surface of titanium alloy particles. Vacuum deoxygenating was applied to remove the oxygen-containing groups in GO, in order to reduce the introduction of oxygen. The compact composites with refined equiaxed and lamellar α phase structures were prepared by hot isostatic pressing (HIP). The results show that in-situ TiC layers form on the surface of GO and GO promotes the precipitation of hexagonal (TiZr)6Si3 particles. The composites exhibit significant improvement in strength and microhardness. The room-temperature tensile strength, yield strength and microhardness of the composite added with 0.3 wt% GO are 9%, 15% and 27% higher than the matrix titanium alloy without GO, respectively, and the tensile strength and yield strength at 600 °C are 3% and 21% higher than the matrix alloy. The quantitative analysis indicates that the main strengthening mechanisms are load transfer strengthening, grain refinement and (TiZr)6Si3 s phase strengthening, which accounted for 48%, 30% and 16% of the improvement of room-temperature yield strength, respectively.

show abstract

Section: Resultssupporting

confidence: 92%

Microstructure and Tensile Properties of Graphene-Oxide-Reinforced High-Temperature Titanium-Alloy-Matrix Composites

Chen

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…The presence of TiC and GNPs can be further verified from the XPS and Raman spectroscopy analysis. The XPS survey spectra of 0.3 wt.% GNPs/CT20 composite is shown in [14,22,23]. Therefore, the in-situ formed TiC could not only achieve the compact interfacial bonding, but also provide the reinforcement effect to strengthen the composites.…”

Section: Microstructure Of Bulk Gnps/ct20 Compositesmentioning

confidence: 99%

“…It is well known that these GNPs (with large surface areas and high surface energy) are prone to agglomerate due to strong van der Waals forces among the GNPs [19][20][21]. Moreover, the significant in-situ reactions and formation of TiC during the sintering process could completely destroy the nano-structures of GNPs, thus leading to a limited strengthening effect [22].…”

Section: Introductionmentioning

confidence: 99%

Simultaneously enhancing the strength and ductility in titanium matrix composites via discontinuous network structure

Dong

Liu

et al. 2020

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

In this study, titanium matrix composites reinforced with graphene nanoplates (GNPs) were successfully prepared via an in-situ processing strategy. Both TiC nanoparticles and TiC@GNPs strips are in-situ formed at the grain boundaries, and enhance interfacial bonding strength between GNPs and Ti matrix by acting as rivets in the microstructure. The GNPs can be retained in the center of TiC layer, which provides a shielding protection effect for the GNPs.These in-situ formed TiC nanoparticles are linked together to form a discontinuous and three-dimensional (3D) network structure. Due to the formation of 3D network architecture and improved interfacial bonding, the composites show both high strength and good ductility. The significant strengthening effect reinforced by the GNPs can be attributed to a homogeneous distribution of in-situ formed TiC nanoparticles and TiC@GNPs strips, resulting in TiC interface/particle strengthening and excellent interfacial load transfer capability.

show abstract

“…Currently there are a few reports available in literature about the improvement of mechanical properties of pure Ti matrix by introducing graphite powders (GPs), graphene nanoplates (GNPs) and graphene oxide nanosheets (GONs), as listed in Table S1. Previously we added 0.3 wt% GONs into pure Ti powders and reported that tensile strength of the sintered TiMC was increased by 9.7%, compared to that of sintered pure Ti matrix [34]. However, none of the reported studies are focused on the reinforcement of Ti alloy matrix using different nanocarbon materials.…”

Section: Introductionmentioning

confidence: 99%

Carbonaceous nanomaterial reinforced Ti-6Al-4V matrix composites: Properties, interfacial structures and strengthening mechanisms

Dong

et al. 2020

Carbon

Self Cite

102

View full text Add to dashboard Cite

Mechanisms of simultaneously enhanced strength and ductility of titanium matrix composites reinforced with nanosheets of graphene oxides

Cited by 45 publications

References 56 publications

Microstructure and Tensile Properties of Graphene-Oxide-Reinforced High-Temperature Titanium-Alloy-Matrix Composites

Microstructure and Tensile Properties of Graphene-Oxide-Reinforced High-Temperature Titanium-Alloy-Matrix Composites

Simultaneously enhancing the strength and ductility in titanium matrix composites via discontinuous network structure

Carbonaceous nanomaterial reinforced Ti-6Al-4V matrix composites: Properties, interfacial structures and strengthening mechanisms

Contact Info

Product

Resources

About