Sliding wear behaviour of T6 treated A356–TiB2 in-situ composites

Mandal, Arka; Murty, B.S.; Chakraborty, M.

doi:10.1016/j.wear.2008.12.011

Cited by 126 publications

(76 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Large elongated dimple morphology can be seen along the sliding direction on the surface of composite material showing white patches along the grooves. Similar morphology is indicated by other researchers in ceramic reinforced AMCs [16,17]. The width of grooves and elongation of dimples are more predominant as the load is increased from 2.5 kg to 5.5 kg as shown in Fig.…”

Section: Microstructural Analysis Of Worn Surfaces and Wear Debrissupporting

confidence: 88%

Wear and microstructural characteristics of spray atomized zircon sand reinforced LM13 alloy

Kaur

Pandey²

2010

Materialwissenschaft Werkst

View full text Add to dashboard Cite

The requirement of the high performance light weight materials demands the development of varieties of materials within the economical range to get it commercialized. Light weight aluminium alloys are used in several structural applications like automotive, aerospace, defense industry and other fields of engineering. The ceramic particle reinforced aluminium metal matrix composites (AMCs) have emerged as a suitable candidate for commercial applications. A variety of processing routes have been adopted to manufacture AMCs. In the present work LM13 alloy reinforced with zircon sand is formed via spray forming. During experimentation a self prepared convergent-divergent nozzle is used for inert gas atomization of the melt which is subsequently deposited on copper substrate placed vertically below the atomizer. The zircon sand particles are injected in the atomization zone by external injectors aligned perpendicular to the gas atomization axis. Zircon sand has been found to have new promising economical commercial candidate due to its easy availability and good mechanical properties like high hardness, high modulus of elasticity and good thermal stability. The microhardness of cast alloy and spray formed composite shows that the spray formed zircon sand reinforced composite has higher hardness. Also the lower wear rate has been observed in case of the zircon sand reinforced AMC as compared to LM13 alloy. This behaviour is further analyzed in light of microstructural features of the spray deposited composite using optical and scanning electron microscope (SEM). A comparative study of this material (LM13/Zircon sand) with the parent alloy (LM13) is presented in this work.

show abstract

Section: Microstructural Analysis Of Worn Surfaces and Wear Debrissupporting

confidence: 88%

Wear and microstructural characteristics of spray atomized zircon sand reinforced LM13 alloy

Kaur

Pandey²

2010

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…It is clear that two classes of debris are generated during the sliding wear, i.e., coarse flaky and fine equiaxed debris, which is very much similar to the results obtained earlier. 31) In the case of the alloy, at lower load (19.6 N), the size of the coarse flaky debris appears to be independent of squeeze pressure, as shown in Figs. 15(a) and 15(b).…”

Section: Wear Surface and Debris Analysismentioning

confidence: 82%

“…In the case of the gravity-cast alloy, the extent of deformation is quite high during dry sliding wear due to lower hardness ( Fig. 13(a)), which causes the formation of two different types of cracks on the wear surface: one is formed by scratching ridgy alloy layers generated by micro-ploughing and deformation under frictional contact stress, 30,31) as shown in Fig. 14(a) A, B, C and D; the other is generated at the locations of casting defects such as shrinkage porosities and gas porosities of the worn alloy, and then propagated to the wear surface of the alloy under frictional contact stress, as indicated by Fig.…”

Section: Wear Surface and Debris Analysismentioning

confidence: 99%

“…15 and 16. It has been proposed in the literature 30,31,3537) that the Fe-rich phases along with its oxides can act as in-situ solid lubricants, thereby aiding in reducing the wear rates of the squeeze-cast alloy and composite. Figure 18 presents the plot showing the variation of the coefficients of friction (COF) with applied load during steady state wear of the gravity-cast and squeeze-cast alloys and composites.…”

Section: Wear Surface and Debris Analysismentioning

confidence: 99%

See 1 more Smart Citation

Wear Behaviour of Squeeze-Cast Al 2014 Alloy and <i>In-Situ</i> 5 vol% TiB<sub>2</sub>/2014 Composite

et al. 2012

View full text Add to dashboard Cite

Dry sliding wear behaviour of gravity-cast and squeeze-cast Al 2014 alloys and in-situ 5 vol% TiB 2 /2014 composites has been studied. Squeeze casting at different pressures has been performed on the alloy and composite. Wear tests carried out at loads of 9.858.8 N on a pin-ondisc machine show that both the squeeze-cast alloy and composite are more wear resistant than their gravity-cast samples. For the squeeze-cast alloys, the sample solidified at a squeeze pressure of 60 MPa shows the least wear rate. However, in the case of the squeeze-cast composites, the wear resistance of the sample solidified at a squeeze pressure of 120 MPa is the best. The wear rates decrease with increasing hardness. A detailed SEM study of wear surface and debris is carried out to substantiate the wear results. The results indicate that the improvement in wear resistance for the squeeze-cast alloy and composite is mainly attributed to the increase in hardness and reduction in casting defects such as gas porosities and shrinkage porosities. In addition, for the squeeze-cast composite, the effect of improved dispersion of TiB 2 particles on the wear resistance is also discussed.

show abstract

“…Also, it is cleared from the figure that grooves are much finer and closely spaced in AA7075/8 wt % TiC due to the sliding action of a larger number of hard particles and debris. Few patches of oxygen-rich material were occurring evenly throughout the worn surface in all cases that eventually break off to form the loose debris [25]. Presence of craters in the tribo-layer are believed to be due to the cracking and breaking of delaminated layer into fragments, which might have resulted in the production of high aspect ratio wear debris or third body abrasives [26].…”

Section: Wear Surface Of Matrix and Compositementioning

confidence: 95%

Tribological properties of Aluminium Metal Matrix Composites (AA7075 Reinforced with Titanium Carbide (TiC) Particles)

Rao¹,

Ramanaiah²,

Sarcar³

2016

IJAST

View full text Add to dashboard Cite

show abstract

Sliding wear behaviour of T6 treated A356–TiB2 in-situ composites

Cited by 126 publications

References 18 publications

Wear and microstructural characteristics of spray atomized zircon sand reinforced LM13 alloy

Wear and microstructural characteristics of spray atomized zircon sand reinforced LM13 alloy

Wear Behaviour of Squeeze-Cast Al 2014 Alloy and <i>In-Situ</i> 5 vol% TiB<sub>2</sub>/2014 Composite

Tribological properties of Aluminium Metal Matrix Composites (AA7075 Reinforced with Titanium Carbide (TiC) Particles)

Contact Info

Product

Resources

About