Analysis of the Tribological Properties of Commercial Pure (CP) Aluminum Developed by Chip Consolidation through Equal Channel Angular Pressing (ECAP)

Abstract:

The goal of this research work is to study the role of equal channel angular pressing on consolidation behavior of machined chips of CP Al through ECAP. The chips are collected by orthogonal cutting with cutting edge angle 75° and depth of cut 0.2 mm. The ECAP die with Φ = 90° (channel angle) and Ψ = 20° (corner angle) is used for consolidation of machined chips. The consolidation is done by pre-heating the chips at 200°C upto four passes through processing route B_C. The maximum density of 99% and hardness of 94 HV was obtained after 4 ECAP passes. Tribological properties is evaluated by Pin-on-disc dry wear testing for three different loads at a constant sliding speed 750 RPM and distance of 5 kms. Chip consolidated CP Al is inferior in wear resistance with as-received CP Al owed to localised debonding of chips with the sliding disc.

• Periodical: Materials Science Forum (Volume 969)
• Pages: 361-366
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.969.361
• Online since: August 2019
• Authors: Rajendara Rao Krishnaji Rao Vittel Rao*, Kondaiah Gudimetla, Mariappan Senthil Kumar, S. Ramesh Kumar, Perumal Venkatachalam
• Keywords: Chip Consolidation, CP Al, ECAP, Solid State Chip Recycling, Tribological Properties

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