NDLI: INFLUENCE OF NANO-Al 2 O 3 AND MICRO-ZrO 2 PARTICLES ON MECHANICAL PROPERTY OF A 356 BASED COMPOSITE FABRICATED BY COMBINATION EFFECT OF STIR AND SQUEEZE CASTING

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INFLUENCE OF NANO-Al 2 O 3 AND MICRO-ZrO 2 PARTICLES ON MECHANICAL PROPERTY OF A 356 BASED COMPOSITE FABRICATED BY COMBINATION EFFECT OF STIR AND SQUEEZE CASTING

Content Provider	Semantic Scholar
Author	Ranjan, Rajeev Sukesha V. Nagesh, G. Sekar, Karuppanan Calicut, Nit
Copyright Year	2014
Abstract	Aluminium Metal Composites(AMCs) is having better property compared to unreinforced materials like greater strength,improved stiffness, reduced weight, improved properties at elevated temperature ,controlled thermal expansion coefficientbehavior, enhanced electrical performance, improved abrasion and wear resistance and improved damping capabilities.In the present work A356 has been casted with reinforcing nano-Al2O3 and micro-ZrO2 ceramic powders. The reinforced powders is having high level of hardness and toughness known as ceramic steel and having good strength at high temperature. Fabrication were done in a resistance furnace equipped with stir and squeeze system. Furnace temperature was kept at 850 ̊C and stirring was done at 300 rpm for 14 min.Ceramics were preheated at 600 ̊C for 30 min.A squeeze pressure of 45MPa was applied in the semi solid state.Samples were prepared for testings like hardness, double shear,bending strength and for wear test.A short term heat treatment technique is applied for the heat treatment of specimen (solution heat treatment at 560 ̊C for 2 hr and aging at 200 ̊C for 2 hr).For hardness testBrinell hard test was used and4 indentations were done on each specimen to obtain data of hardness. Heat treated specimen shows better mechanical property. Wear test was conducted on all the specimen, ceramic reinforced specimen shows improved wear resistance. Worn surface morphology shows the behavior of specimen at different loads and at different distances.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.iitg.ac.in/aimtdr2014/PROCEEDINGS/papers/344.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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