Synthesis and characterization of in situ formed titanium diboride particulate reinforced AA7075 aluminum alloy cast composites

Rajan, Hashikaa; Ramabalan, S.; Dinaharan, I.; Vijay, S.J.

doi:10.1016/j.matdes.2012.08.008

Cited by 204 publications

(47 citation statements)

References 38 publications

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“…Hard ceramic particles which act as load bearing elements and LM13 aluminium alloy transmits the load to the reinforcements which results in higher ultimate tensile strength. Similar results have been observed in other studies that reinforcement of hard ceramic particles improved the ultimate tensile strength of composites [20,31]. Ductility of the composites was calculated using percentage of elongation and reported, Table 3.…”

Section: Tensile Strengthsupporting

confidence: 87%

“…Many researchers have reported the improvements in hardness, tensile strength and wear resistance of aluminium alloy by reinforcing silicon carbide, aluminium oxide, boron carbide, titanium carbide, titanium diboride, tungsten oxide, steel fibers, carbon nano tubes, graphite, beryl, quartz, rock dust and fly ash particles [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Researchers have studied the effect of fly ash particles reinforcement in AA6061 aluminium alloy.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on mechanical properties and tribological behaviour of stir cast LM13 aluminium alloy based particulate hybrid composites

Chelladurai¹,

Murugesan²,

Rajamani³

et al. 2019

Materialwissenschaft Werkst

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LM13 aluminium alloy with boron carbide (0 wt.%–7.5 wt.%) and fly ash (2.5 wt.%) reinforced particulate hybrid composites were fabricated using liquid metallurgy route. Microstructure and mechanical properties viz., hardness, ultimate tensile strength and ductility were investigated. Wear behaviour of composites was tested by varying sliding distance and load. Fracture surface and worn surface of composites were examined using field emission scanning electron microscope. Microstructure of hybrid composites revealed uniform dispersion of particles in LM13 aluminium alloy. Hardness and tensile strength of composites increased with increasing wt.% of boron carbide and fly ash particles. Wear test results showed that addition of particles significantly decreased the weight loss and coefficient of friction. Also cumulative weight loss decreased up to 47.2 % for 10 wt.% of hybrid composites as compared to LM13 aluminium alloy. Fracture surface of composites showed dimples with particle cracking on the surface. Worn surface of LM13 aluminium alloy showed continuous grooves due to ploughing with delamination. However, worn surface of composites showed fine grooves due to the presence of hard reinforcements on the surface. Boron carbide and fly ash reinforced LM13 aluminium hybrid composites exhibited superior mechanical properties with excellent wear resistance as compared to LM13 aluminium alloy.

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Section: Tensile Strengthsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Investigation on mechanical properties and tribological behaviour of stir cast LM13 aluminium alloy based particulate hybrid composites

Chelladurai¹,

Murugesan²,

Rajamani³

et al. 2019

Materialwissenschaft Werkst

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“…In recent decades, metal matrix composites (MMCs) are used to replace the emergent stipulate for light density with high performance materials in advanced manufacturing industries [1]. Among the MMCs, aluminium matrix composites (AMCs) are widely used as an attractive option for aviation, transportation, sports industries and defence applications owing to their favourable characteristics such as high strength-to-weight ratio, high specific modulus, good wear and corrosion resistance and low thermal expansion coefficient [2].…”

Section: Introductionmentioning

confidence: 99%

Parametric studies on dry sliding wear behaviour of Al-7075 alloy matrix composite using S/N ratio and ANOVA analysis

Alagarsamy¹,

Ravichandran²

2020

Mater. Res. Express

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Al7075/10 wt% TiO 2 alloy composite has been fabricated by the stir casting method to investigate the influence of wear parameters. The microstructure of the produced composite was analyzed by scanning electronic microscopy. A pin-on-disc rig was used to carry out the wear test on produced composite under dry sliding conditions. The three wear control parameters such as load, sliding velocity and sliding distance were chosen to study the effects on the wear rate and coefficient of friction of composite. The experiments were planned as per L9 orthogonal array based on Taguchi's design of experiments. The signal-to-noise ratio and analysis of variance techniques were employed to determine the optimum combination of parameters and the significant contribution of each parameter on the responses. The results exposed that the load was the most predominant factor affecting the wear rate and coefficient of friction followed by the sliding distance and sliding velocity. Finally, the regression equations were developed to predict the responses. The worn surface morphology of composite noticed that TiO 2 reinforcement protects the matrix alloy from removal of material at all conditions. This investigation revealed that the wear resistance of the Al7075 alloy can be enhanced by the incorporation of TiO 2 particles.

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“…The noteworthy characteristics of TiB 2 are its stability in liquid metal unlike other ceramic materials, which react with the liquid metal. In addition to the mentioned properties, TiB 2 also has extreme hardness and exceptional tribological characteristics [10][11][12][13]. Its hardness value of 3400 HV is superior to many of the well-established ceramic reinforcements.…”

Section: Introductionmentioning

confidence: 99%

Investigation on mechanical and tribological behaviour of titanium diboride reinforced martensitic stainless steel

Sadhasivam

Mohan²,

Sankaranarayanan

et al. 2020

Mater. Res. Express

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The role of metal matrix composites (MMCs) has gained huge momentum in various researches as well as in industrial applications due to their high stiffness and higher strength to weight ratio. It helps in achieving enormous weight reduction without compromising the strength of the material. In this study, a novel attempt was made to fabricate MMCs with martensitic stainless steel as matrix and titanium diboride (TiB 2 ) as reinforcement. The AISI 420 matrix with different weight percentages (1%, 2%, and 4%) of TiB 2 reinforcement was fabricated by vacuum induction melting technique (VIM). The aim of this study was to analyze the influence of TiB 2 particle addition on the mechanical and tribological properties of AISI 420 composites. X-ray diffraction studies revealed the presence of TiB 2 phase in the composite along with peak shifting and broadening of the steel matrix due to induced strain. Optical microscopy showed the distribution of TiB 2 particles in the matrix along with a significant amount of grain refinement of the composite due to the addition of TiB 2 . Microhardness results showed that the presence of TiB 2 improved the hardness with AISI 420/4%TiB 2 composite possessing the maximum hardness. Tensile test results indicated a significant improvement in the ultimate tensile and yield strength of the composite with the addition of TiB 2 . The wear tests were carried out on a pin on disc tribometer for various loads at a different sliding distance for steady sliding velocity. The dispersion of TiB 2 particle helped in achieving better wear resistance of the composites. Wear surface morphology was carried out to explore the wear mechanisms. Among the various wear mechanisms, abrasion and oxidation phenomena dominated in the composites. Taguchi optimization technique predicted that wt% of TiB 2 and applied load as influencing factors on the wear rate of the material.

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Synthesis and characterization of in situ formed titanium diboride particulate reinforced AA7075 aluminum alloy cast composites

Cited by 204 publications

References 38 publications

Investigation on mechanical properties and tribological behaviour of stir cast LM13 aluminium alloy based particulate hybrid composites

Investigation on mechanical properties and tribological behaviour of stir cast LM13 aluminium alloy based particulate hybrid composites

Parametric studies on dry sliding wear behaviour of Al-7075 alloy matrix composite using S/N ratio and ANOVA analysis

Investigation on mechanical and tribological behaviour of titanium diboride reinforced martensitic stainless steel

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