Investigation on the influence of heat-treatment parameters on the hardness of AA6061-SiCp composite

Mahadevan, K.; Raghukandan, K.; Senthilvelan, T.; Pai, B.C.; Pillai, U.T.S.

doi:10.1016/j.jmatprotec.2005.06.073

Cited by 13 publications

(8 citation statements)

References 20 publications

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“…Beyond the value of aging time of 8 hours, the composite volume loss starts increasing. This observation was in agreement with the previous researcher Mahadevan et al, 2006. They stated that properties of the composite decrease with increasing the aging duration Ͼ 8 hours. Figure 14 shows the interaction effect of solutionizing temperature and aging temperature on volume loss.…”

Section: Industrial Lubrication and Tribologysupporting

confidence: 93%

“…Majority of the research work, the effect of heat treatment on the friction and wear properties of hybrid composites has not been extensively investigated. Mathematical models to predict the influence of heat treatment on wear rate of composite were developed by few investigators (Mahadevan et al, 2006). Based on the above considerations, this study was taken up to determine the effect of heat treatment on the wear behavior of Al6061 hybrid MMC reinforced with 10 weight per cent SiC and 2 weight per cent graphite particles.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigations on the effect of heat-treatment parameters on the wear behavior of aluminum hybrid composites

Velmurugan¹,

Subramanian

Ramakrishnan

et al. 2014

Industrial Lubrication and Tribology

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Purpose – The purpose of this paper is to investigate the influence of most predominant heat-treatment parameters on the wear behavior of Al6061 hybrid composite reinforced with 10 weight per cent SiC and 2 weight per cent graphite particles. Design/methodology/approach – The aluminum hybrid composite was produced using stir casting process. Wear testing of heat-treated samples was carried out using a pin-on-disc apparatus. Experiments were conducted by applying design of experiments (DOE) technique. The experimental values were used for formulation of a mathematical model. The wear surfaces of composite specimens were analyzed using scanning electron microscope (SEM). Findings – The volume loss of heat-treated composite initially decreased with increasing aging duration. This was followed by the attainment of a minimum and then a reversal in the trend at longer aging times. SEM micrographs of the wear surfaces of the composite show that the wear mechanisms were abrasion, delamination and adhesion. Originality/value – In this paper, the hybrid composite was produced using stir casting route, and its wear properties after heat treatment were tested using pin-on-disc apparatus. It was found that heat treatment had a profound effect on the wear behaviour of the developed composite.

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Section: Industrial Lubrication and Tribologysupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Experimental investigations on the effect of heat-treatment parameters on the wear behavior of aluminum hybrid composites

Velmurugan¹,

Subramanian

Ramakrishnan

et al. 2014

Industrial Lubrication and Tribology

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“…It is well known that many aluminium alloys can be heat treated as in the case of the 2XXX, 6XXX and 7XXX series. Many alloys of these series are being used as a matrix material and provide the composite with diverse properties determined by its microstructure, reinforcements percentage and the nature of matrix particles interface (Gomez de Salazar and Barrena, 2004;Mahagundappa and Shivanand, 2007;Mahadevan et al, 2006). Aluminium matrix composites can achieve a higher hardening index if given a heat treatment (Ramesh and Safiulla, 2007).…”

Section: Introductionmentioning

confidence: 99%

Investigation of friction and wear behavior of hybrid aluminium composites

Velmurugan¹,

Subramanian

Thirugnanam³

et al. 2012

Industrial Lubrication and Tribology

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Purpose -The purpose of this technical paper is to investigate the friction and wear behaviour of heat treated Al 6061 alloy and Al 6061 SiC-graphite particulate reinforced hybrid composites subjected to different ageing durations. Design/methodology/approach -The composites have been prepared by stir casting process with varying percentages of SiC and graphite particles. The cast 6061 alloy and its composites were subjected to solutionising treatment at a temperature of 803 K for 1 hr followed by quenching in water. The quenched samples were then subjected to artificial ageing for different durations of 4, 6, 8 hr at a temperature of 448 K. Tests were performed on heat treated Al 6061 alloy and its composites using pin-on-disc apparatus. Hardness measurements were also made on the specimens. The wear surfaces of the composites were analyzed using scanning electron microscopy. Findings -During wear test of specimens the wear resistance of the hybrid composites was found to increase with increase in ageing durations. The microscopic examination of the wear surfaces shows that the base alloy and composites wear primarily because of abrasion and delamination. The hardness result shows that the hardness of the composites increased with decreasing weight percentage of graphite particles. Originality/value -The content of this paper is fully research oriented and the finding from this investigation will be useful for society and also the automobile industries, especially in the making of brake drums.

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“…Immediately, artificially aging was done in a muffle furnace over a range of temperature and time. Temperatures in both solutionizing and aging were accurate to within ±2 • C and quench delays in all cases were within 10 s. The process variables considered for the investigation include solutionizing time (S t ), aging temperature (A T ), and aging time (A t ) at two levels (Mahadevan et al, 2006) as given in Table 2. Due to the narrow range of the process parameters chosen, it was decided to use a two level full factorial design.…”

Section: Methodsmentioning

confidence: 99%

Influence of precipitation hardening parameters on the fatigue strength of AA 6061-SiCp composite

Mahadevan

Raghukandan

Pai

et al. 2008

Journal of Materials Processing Technology

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Investigation on the influence of heat-treatment parameters on the hardness of AA6061-SiCp composite

Cited by 13 publications

References 20 publications

Experimental investigations on the effect of heat-treatment parameters on the wear behavior of aluminum hybrid composites

Experimental investigations on the effect of heat-treatment parameters on the wear behavior of aluminum hybrid composites

Investigation of friction and wear behavior of hybrid aluminium composites

Influence of precipitation hardening parameters on the fatigue strength of AA 6061-SiCp composite

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