Manufacturing Technology Today

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Experimental Investigations on Property Evaluation of Al-Alloy Reinforced with Nano Ceramic Particulates based Metal Matrix Composites (NMMC’s) Subjected to Forging


Affiliations
1 Department of Mechanical Engineering, Sir M Visvesvaraya Institute of Technology, Bangalore, India
     

   Subscribe/Renew Journal


This paper involves the Mechanical property Evaluation of Al- Alloy (T6-6061) reinforced with Nano Ceramic Particulates (ZrO2) subjected to forging process. The standard Aluminum alloy ingots/blocks is melted and superheated in the electrical resistance furnace for about 8 hours at 7500 C. The superheated melt was reinforced with zirconium dioxide particulates by varying weight percentages in 3, 6 and 9 percent. The molten metal mixture was poured in a metal die of cylindrical shape having dimensions 300mm X 20mm diameter and allowed to solidify at ambient temperature, the sample were subjected to hand forging process. The microstructural characterization of forged composite specimen exhibits more or less uniform distribution of ZrO2 particulates. The grain structure with spherical morphology of secondary magnesium and silicon phase in the Aluminum matrix whereas the unforged composite sample indicates coarse with dendrite type morphology. The strength results in terms of forged composite specimen reveals significant improvement in the tensile strength over the unforged composite specimen due to refined grain structure. The hardness result also reveals significant improvement in the forged and reinforced samples over the matrix alloy.

Keywords

Nanocomposite, Solidification, Critical Particle Size, Strengthening, Grain Refinement.
User
Subscription Login to verify subscription
Notifications
Font Size

  • Pratik Mukhopadhyay: Alloy Designation, processing, and use of AA6XXX Series Aluminium Alloys, February 2012.

  • Rajesh, N and Dr. Yohan, M: Recent Studies in aluminum metal Matrix Nano Composites (AMMNCS) - Review, vol. 7, no. 6, NovemberDecember 2016, 618-623.

  • Venkateshwarlu, G; Prasad, AMK and Ramesh Kumar, K: Evaluation of Mechanical Properties of Aluminum Alloy AA6061, 'International Journal of Current Engineering and Technology' February 2014, 295-297.

  • Vijay Ramanth, B; C Elanchezhian; Annamalai, RM; Aravind, S; Sri Ananda Atreya, T; Vignesh, V and Subramanian, C: Aluminum Metal Matrix Composites-A Review, 'Rev. Adv. Mater. Sci'., vol. 38, 2014, 55-60.

  • Akash, M; Mani, N; Prajwal, S; Prasanna Kumar, H; Shivakumar, P; Microstructural Charecterization and Mechanical Properteis of Al 6061 subjected to heat treatment Under T6 Conditions, ' International Research Journal of Engineering and Technology (IRJET)', vol. 3, no.

  • , May 2016, 3169-3172.

  • Dharmesh M Patoliya; Sunil Sharma; Preparation and Charecterization of Zirconium Dioxide reinforced with Aluminum Metal Matrix Composites, 'International Journal of Innovative Research in Science, Engineering and Technology', vol. 4, no. 5, May 2015, 33153321.

  • Rajput, V; Gautam, RK; Tyagi, R: Tribological Behaviour of Al Based Self Lubricating Composites, 'Proceedings of Malaysian Intl. Tribology Conference, Nov 2015, 108-110.

  • Ray, N and Karketta, DK: Some studies on Aluminium Matrix In-Situ Composites produced by stir casting method, 'Material Science', 2010.

  • Alavudeen, A; Venkateshwaran, N; Winowlin Jappes, JT: A Textbook of Engineering Materials and Metallurgy, Laxmi Publication, New Delhi, 2006.

  • Park, BG; Crosky, AG; Hellier, AK: Composites: Part B: Engineering, vol. 39 (7-8), Oct - Dec 2008, 1270-1279.

  • Anderson PRG; ARA McLelland and Ward, PJ: Thixofrming of Aluminum- based Metal Matrix Composite system, SAE 940812 Technical Paper.

  • Sherman, Andrew M and Phillip S Sklad: Collaborative Development of Light Weight Metal and Alloys for Automotive Applications”, SAE Transactions, vol. 111, 2002, 744 - 749.

  • Archard, FJ: Contact and rubbing of flat surfaces, 'J. Appl. Physics, vol. 24, 981-988, 1953.

  • Alpas, AT; Zhang, J: Effect of microstructure (particulate size and volume fraction) and counterface material on the sliding wear resistance of particulate - reinforced aluminum matrix composites: 'Metallurgical and Materials Transaction A, May 1994, vol.25 (5), 969-983.

  • Zhang, J and Alpas, AT: Wear Regimes and transition in Al203 particulate-reinforced aluminum alloys, 'Materials Science and Engineering: A', vol. 161, no. 2, April 1993, Pages 273-284.

  • Asthana, R; Tewari, SN: The engulfment of foreign particles by a freezing interface, 'Journal of Materials Science', October 1993, vol. 28, no. 20, 5414–5425


Abstract Views: 262

PDF Views: 0




  • Experimental Investigations on Property Evaluation of Al-Alloy Reinforced with Nano Ceramic Particulates based Metal Matrix Composites (NMMC’s) Subjected to Forging

Abstract Views: 262  |  PDF Views: 0

Authors

S. Shivakumar
Department of Mechanical Engineering, Sir M Visvesvaraya Institute of Technology, Bangalore, India
G. Balakumar
Department of Mechanical Engineering, Sir M Visvesvaraya Institute of Technology, Bangalore, India

Abstract


This paper involves the Mechanical property Evaluation of Al- Alloy (T6-6061) reinforced with Nano Ceramic Particulates (ZrO2) subjected to forging process. The standard Aluminum alloy ingots/blocks is melted and superheated in the electrical resistance furnace for about 8 hours at 7500 C. The superheated melt was reinforced with zirconium dioxide particulates by varying weight percentages in 3, 6 and 9 percent. The molten metal mixture was poured in a metal die of cylindrical shape having dimensions 300mm X 20mm diameter and allowed to solidify at ambient temperature, the sample were subjected to hand forging process. The microstructural characterization of forged composite specimen exhibits more or less uniform distribution of ZrO2 particulates. The grain structure with spherical morphology of secondary magnesium and silicon phase in the Aluminum matrix whereas the unforged composite sample indicates coarse with dendrite type morphology. The strength results in terms of forged composite specimen reveals significant improvement in the tensile strength over the unforged composite specimen due to refined grain structure. The hardness result also reveals significant improvement in the forged and reinforced samples over the matrix alloy.

Keywords


Nanocomposite, Solidification, Critical Particle Size, Strengthening, Grain Refinement.

References