Wear behaviour of cast and mushy state rolled Al–4.5Cu alloy and in-situ Al4.5Cu–5TiB2 composite

Herbert, Mervin A.; Maiti, Rishi; Mitra, Rahul; Chakraborty, M.

doi:10.1016/j.wear.2008.03.010

Cited by 57 publications

(22 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is very much similar to the results obtained earlier. 30) The above analysis indicates that the transition in wear debris size and morphology for the squeeze-cast alloy and composite can alter the wear mechanism in a significantly way. Figure 17 is a typical EDS analysis of wear debris of the gravity-cast composite generated at a normal load of 39.2 N. The EDS spectrum of the loose wear debris is the peaks of Al, Fe, O, Cu and Ti (Fig.…”

Section: Wear Surface and Debris Analysismentioning

confidence: 88%

“…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 2 more Smart Citations

Wear Behaviour of Squeeze-Cast Al 2014 Alloy and In-Situ 5 vol% TiB2/2014 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

Section: Wear Surface and Debris Analysismentioning

confidence: 88%

Section: Wear Surface and Debris Analysismentioning

confidence: 99%

Section: Wear Surface and Debris Analysismentioning

confidence: 99%

See 1 more Smart Citation

Wear Behaviour of Squeeze-Cast Al 2014 Alloy and In-Situ 5 vol% TiB2/2014 Composite

et al. 2012

View full text Add to dashboard Cite

show abstract

“…An important challenge in manufacturing of light weight and high strength aluminium parts is to produce near net shape components of complex geometry with desired properties meeting the requirements of automotive applications [1]. As a result, there is a considerable interest in aluminium based metal matrix composites (MMCs) due to their high specific strength and stiffness [3]. In-situ metal matrix composites in which reinforcement is generated within the alloy offers an advantage of clean interface with minimal interfacial reaction between reinforcement and matrix [4] [5].…”

Section: Introductionmentioning

confidence: 99%

“…In-situ metal matrix composites in which reinforcement is generated within the alloy offers an advantage of clean interface with minimal interfacial reaction between reinforcement and matrix [4] [5]. Amongst many types of reinforcements used [3,[6][7][8][9][10][11][12][13], TiB 2 reinforcement in aluminium alloys using salt based insitu methods offers great advantages such as minimal reactivity [7], clean interface [14], sound thermal conductivity [15] and high elastic modulus and hardness [16]. TiB 2 particles acts as a heterogeneous nucleating site for α-Al [11] controlling the grain size, thereby improves the mechanical properties of the Al matrix.…”

Section: Introductionmentioning

confidence: 99%

Effect of semi-solid forging on microstructure and mechanical properties of in-situ cast Al-Cu-TiB 2 composites

Mathew

Mandal

Kumar

et al. 2017

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

Permanent WRAP URL:http://wrap.warwick.ac.uk/87711 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work by researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT Abstract:The present work deals with the effect of semisolid processing on microstructure and mechanical properties of Al-4.5 % Cu -5% TiB 2 in-situ cast composites. The composite was prepared by flux assisted synthesis in which TiB 2 particles were formed in-situ through an exothermic reaction between K 2 TiF 6 and KBF 4 halide salts. Al-4.5wt% Cu alloy and Al-4.5%Cu-5 % TiB 2 composite samples were forged in semisolid state with 0.3 volume fraction of liquid. Semisolid forging was carried out for two forge reductions (30% and 50% forge reductions). Microstructure studies show that the semi-solid forging results in uniform distribution of TiB 2 particles and Al 2 Cu particles in the composite. Further, TiB 2 particles play a dual role as grain refiners as well as reinforcements of composites. EBSD and nano indentation studies shows that semisolid forging results in dynamic recrystallization of grains in the composite with significant grain refinement which leads to a marked increase in hardness and elastic modulus of the alloy as well as the composite.

show abstract

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

Wear behaviour of cast and mushy state rolled Al–4.5Cu alloy and in-situ Al4.5Cu–5TiB2 composite

Cited by 57 publications

References 33 publications

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

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

Effect of semi-solid forging on microstructure and mechanical properties of in-situ cast Al-Cu-TiB 2 composites

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

Contact Info

Product

Resources

About