Effect of fabrication parameters on the microstructure and mechanical properties of unidirectional Mo-fiber reinforced TiAl matrix composites

Zhou, Yi; Sun, Dalin; Wang, Qing; Han, X.Z.

doi:10.1016/j.msea.2013.03.051

Cited by 22 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest microhardness of the annealed coating (as-sprayed at 450 • C) is about eight times than that of the coating sprayed at 450 • C (103.6 ± 1.32 HV 0.3 ). (11) The average fracture toughness value of the annealed coatings (as-sprayed at 250 • C, 450 • C, and 550 • C) after annealing at 1100 • C for 3 h was 11.6 ± 0.85, 14.8 ± 0.37, and 13.7± 0.25 MPa•m −1/2 , respectively. The fracture toughness of the annealed coatings after annealing at 1100 • C for 3 h was about 12-16 times than that of the as-sprayed coatings.…”

Section: Discussionmentioning

confidence: 91%

“…The brittleness at room temperature of TiAl intermetallic compounds was improved by additions of alloying elements such as Mo, Cr, Nb, V, and Mn [11][12][13][14][15][16]. Meanwhile, the addition of second ceramic phase particles (e.g., TiB 2 [17], Al 2 O 3 [18][19][20], SiC [21], TiC [22,23], Ti 2 AlC [24], Ti 5 Si 3 [25], and their combination [26][27][28]) to titanium aluminide alloys can further improve the creep resistance, fracture toughness, wear resistance, and heat-resistance stability of TiAl intermetallic compounds.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure, Microhardness, Fracture Toughness, and Abrasive Wear of In-Situ Synthesized TiC/Ti-Al Composite Coatings by Cold Spraying Combined with Heat Treatment

Chen

Bai

et al. 2021

Coatings

View full text Add to dashboard Cite

TiAl intermetallic compounds, as a new kind of high-performance light-weight structural material, are widely applied in many fields. Titanium carbide (TiC) as the reinforcing phase could improve the mechanical properties, wear resistance, and heat-resistance stability of TiAl intermetallic compounds. Ti(Al, C) mixture powders were deposited by cold spraying at gas temperature of 250 °C, 450 °C, and 550 °C. Then, Ti(Al, C) coatings were annealed at temperatures of 650 °C for different times and following holding at 1100 °C for 3 h. The microstructure, microhardness, fracture toughness, and abrasive wear of Ti-Al composite coatings were investigated. The research results were that the particle size of mixture powders decreased as the ball milling time prolonging. Ti(Al) solid solution appeared in the mixture powders as the milling time increased to 30 h. The average porosity of the coating sprayed at 550 °C was the lowest (0.85%). The as-sprayed coatings exhibited the same phase compositions with the mixture powders. The coating sprayed at gas temperature of 550 °C has the highest microhardness and the lowest weight loss. Ti-Al intermetallic was in-situ synthesized after annealing at 650 °C. The average porosity of the annealed coating (sprayed at 450 °C) was the lowest. The content of Ti-Al intermetallic compounds of the annealed coating sprayed at 450 °C is the highest. The X-ray diffraction( XRD) analysis results are consistent with the EDS analysis of the annealed coatings after annealing at 650 °C. Ti-Al intermetallic compounds were almost completely formed in the three kinds of the coatings after annealing at 650 °C for 20 h and following holding at 1100 °C for 3 h. TiAl and TiAl3 intermetallic phases were in-situ synthesized in the coatings based on the energy dispersive spectroscopy (EDS) and XRD analysis. TiC was also in situ synthesized in the coatings as the annealing temperature increased to 1100 °C. The annealed coating (sprayed at 450 °C) has the highest microhardness, fracture toughness, and wear resistance properties after annealing at 1100 °C for 3 h.

show abstract

Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Microstructure, Microhardness, Fracture Toughness, and Abrasive Wear of In-Situ Synthesized TiC/Ti-Al Composite Coatings by Cold Spraying Combined with Heat Treatment

Chen

Bai

et al. 2021

Coatings

View full text Add to dashboard Cite

show abstract

“…Liquid infiltration are most adopted methods to fabricate C f /Mg composites [10,12,13]. High temperature and oxygen-enriched atmosphere during liquid infiltration might degrade the performance of the composites.…”

mentioning

confidence: 99%

Failure Behaviors of 2D-C<sub>f</sub>/Mg Composites Fabricated by Liquid-Solid Extrusion Following Vacuum Pressure Infiltration

Zhou

et al. 2016

SSP

View full text Add to dashboard Cite

Liquid-solid extrusion following vacuum pressure infiltration technique (LSEVI), which integrates melting, pouring, infiltration, and liquid-solid forming under high infiltration pressure, is a promising technique for the fabrication of metal matrix composite. LSEVI technology combines the advantages of both squeeze casting and gas pressure infiltration method. In this study, 2D carbon fiber reinforced AZ91D matrix composites (2D-Cf/Mg composites) were fabricated by LSEVI. Pyrolytic carbon (PyC) coating was deposited on surface of T700 carbon fiber by chemically vapour deposited (CVD) before fabrication. SEM observation indicated that the composites were well fabricated by LSEVI. The ultimate tensile strength of 2D-Cf/Mg composites fabricated by LSEVI was 390-410 MPa. Two kinds of failure behavior were found during tensile test: abrupt failure and progressive failure. The abrupt failure was characterized by a complete failure after the ultimate tensile strength (UTS) was reached. The progressive failure was a unique failure behavior with gradual damage after the UTS. In the case of progressive failure, the remaining strength after the UTS was 79% of the UTS. There was a remaining strength of 200 MPa under the strain of 0.1. Fracture surface morphology indicated that the remaining strength was attributed to the gradual breakage of the fiber bundles.

show abstract

Evolution and micromechanical properties of interface structures in TiNbf/TiAl composites prepared by powder metallurgy

Yang

et al. 2020

J Mater Sci

View full text Add to dashboard Cite

Effect of fabrication parameters on the microstructure and mechanical properties of unidirectional Mo-fiber reinforced TiAl matrix composites

Cited by 22 publications

References 30 publications

Microstructure, Microhardness, Fracture Toughness, and Abrasive Wear of In-Situ Synthesized TiC/Ti-Al Composite Coatings by Cold Spraying Combined with Heat Treatment

Microstructure, Microhardness, Fracture Toughness, and Abrasive Wear of In-Situ Synthesized TiC/Ti-Al Composite Coatings by Cold Spraying Combined with Heat Treatment

Failure Behaviors of 2D-C<sub>f</sub>/Mg Composites Fabricated by Liquid-Solid Extrusion Following Vacuum Pressure Infiltration

Evolution and micromechanical properties of interface structures in TiNbf/TiAl composites prepared by powder metallurgy

Contact Info

Product

Resources

About