Effect of Mo addition on the microstructure and wear resistance of in situ TiC/Al composite

Wu, Qifei; Yang, Caiding; Xue, Feng; Yangshan, Sun

doi:10.1016/j.matdes.2011.06.045

Cited by 42 publications

(18 citation statements)

References 17 publications

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“…Silicon carbide (SiC) and alumina (Al 2 O 3 ) are extensively used as particulate reinforcements to prepare AMCs over three decades since the advent of AMCs. The development of various production methods made it possible to incorporate several potential ceramic particles such as fly ash [4], SiO 2 [5], TiO 2 [6], AlN [7], Si 3 N 4 [8], TiC [9], B 4 C [10], TiB 2 [11] and ZrB 2 [12] to prepare AMCs.…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Moses¹,

Dinaharan²,

Sekhar³

2016

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Stir casting is an economical method to produce aluminum matrix composites. In the present work, composites of aluminum alloy AA6061 reinforced with various amounts (0, 5, 10 and 15 wt.%) of TiC particles were prepared by stir casting technique. X-ray diffraction patterns of the prepared composites clearly revealed the incorporation of TiC particles without the presence of any other compounds. The microstructures of the composites were studied using optical and scanning electron microscopy. It was observed that the TiC particles distributed all over the composite and properly bonded to the matrix alloy. Local clusters of TiC particles were also seen in a few places. The result shows that the reinforcement of TiC particles enhances the microhardness, ultimate tensile strength and wear resistance of the composite. The details of fracture morphology, worn surface, and wear debris are also presented in this paper. K e y w o r d s : metal matrix composites, stir casting, microstructure, mechanical properties

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Section: Introductionmentioning

confidence: 99%

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Moses¹,

Dinaharan²,

Sekhar³

2016

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“…In the previous studies, Lindahl and Liu et al 19,21,30 have reported that the formed Mo containing phase could improve the wettability of interfaces between ceramic and metallic matrix phases to introduce a stronger combination of the interfaces. In early years, Humenik et al 31 have researched nickel-titanium carbide systems by smelting vacuum-melted method.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, microstructure and mechanical properties of (Ti,Mo)Al/Al₂O₃in situ composites by reactive hot pressing

2017

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composites were successfully synthesized utilizing in situ reactive hot pressing method with Ti, Al, and MoO 3 powders as starting materials. A possible synthesis mechanism was proposed to explain the formation of (Ti,Mo)Al/Al 2 O 3 composites. The investigation results indicate a probable reaction process that molten Al reacted with MoO 3 to form Al 2 O 3 and Mo, and the TiAl matrix grains were refined increasingly by Al 2 O 3 with the addition of MoO 3 increased, accompanying with a small quantity of Mo containing phase AlMoTi 2 formed in the fabricated composites. Meanwhile, the microstructure and mechanical properties of the (Ti,Mo) Al/Al 2 O 3 composites were characterized. The as-synthesized composites exhibited lamellar structure of TiAl intermetallic compound and the in situ formed fine Al 2 O 3 particles dispersed at the stratified TiAl matrix grain boundaries hindering the growth of the grain size of the matrix. And the Rockwell hardness, flexural strength, and fracture toughness of the as-prepared (Ti,Mo) Al/Al 2 O 3 composite were 44.08 HRC, 684 MPa, 7.63 MPaÁm 1/2 , which improved by 57.4%, 107.3%, and 38.7% compared to monolithic TiAl, respectively. The reinforcing mechanism of the material was also discussed.

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“…This problem could partially be resolved through the pretreatment of the dispersoid particles before adding them to the melt [11,26]. In-situ generation of the reinforcement particles from within the matrix has been observed to be beneficial in terms of its ability to produce sound dispersoid/matrix interfacial bonding and reinforce very fine (dispersoid) particles with their fairly uniform distribution in the matrix [34][35][36][37][38][39][40][41][42][43][44]. The highly exothermic nature of the in-situ reaction makes it self-sustaining type and finishes fast thereby leading to the generation and homogeneous distribution of thermally stable fine dispersoid particles in the matrix [36].…”

Section: Almentioning

confidence: 99%

Two-Body Abrasive Wear Behaviour of In-Situ Al-TiC Particle Composites: Influence of TiC Reinforcement and Content in the Alloy Matrix and Experimental Parameters

et al. 2019

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This study pertains to observations made on the abrasive wear response of Al-TiC composites under varying applied load and traversal distance conditions. The influence of TiC particle reinforcement and its content in the matrix on the abrasion characteristics of the samples was investigated. The composites were prepared by generating the reinforcement phase (TiC particles) from within the matrix employing a hybrid in-situ technique consisting of a combination of steps involved in powder and liquid metallurgy routes of synthesizing metal matrix composites. The unreinforced matrix alloy (AA2014) was also tested under identical experimental conditions for comparison purposes. Properties characterized were wear rate, frictional heating and friction coefficient. Microstructural features of the samples and characteristics of wear surfaces, subsurface regions and abrasive medium have also been examined. The TiC reinforcement led to improved abrasion resistance (inverse of wear rate), the degree of improvement increasing further with the rising concentration of the TiC particles in the alloy matrix. Increasing applied load led to deterioration in the wear behaviour of the samples while a reverse trend was followed as the traversal distance was raised. The severity of frictional heating was noted to increase with load. On the contrary, friction coefficient tended to decrease with increasing load except for the composite containing the highest concentration of TiC wherein a reverse trend was noticed. Both frictional heating and friction coefficient increased sharply with traversal distance initially. This was followed by a reduction in the rate of temperature increase at longer traversal distances whereas friction coefficient was observed to attain steady state condition after showing a decrease in some cases. The presence of TiC reinforcement in the alloy matrix and its increasing content led to a decrease in the friction coefficient and the severity of frictional heating. The observed wear behaviour has been substantiated through the characteristics of abraded surfaces and subsurface regions of the samples and degradation of the abrasive medium. Operating material removal mechanisms have also been examined.

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Effect of Mo addition on the microstructure and wear resistance of in situ TiC/Al composite

Cited by 42 publications

References 17 publications

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Synthesis, microstructure and mechanical properties of (Ti,Mo)Al/Al₂O₃in situ composites by reactive hot pressing

Two-Body Abrasive Wear Behaviour of In-Situ Al-TiC Particle Composites: Influence of TiC Reinforcement and Content in the Alloy Matrix and Experimental Parameters

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Effect of Mo addition on the microstructure and wear resistance of in situ TiC/Al composite

Cited by 42 publications

References 17 publications

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Production and characterization of titanium carbide particulate reinforced AA6061 aluminum alloy composites using stir casting

Synthesis, microstructure and mechanical properties of (Ti,Mo)Al/Al2O3in situ composites by reactive hot pressing

Two-Body Abrasive Wear Behaviour of In-Situ Al-TiC Particle Composites: Influence of TiC Reinforcement and Content in the Alloy Matrix and Experimental Parameters

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Synthesis, microstructure and mechanical properties of (Ti,Mo)Al/Al₂O₃in situ composites by reactive hot pressing