Investigation on wear and corrosion behavior of equal channel angular pressed aluminium 2014 alloy

Divya, SP and Yoganandan, G and Balaraju, JN and Srinivasan, Santhakumari and Nagaraj, M and Ravisankar, B Investigation on wear and corrosion behavior of equal channel angular pressed aluminium 2014 alloy. In: Investigation on wear and corrosion behavior of equal channel angular pressed aluminium 2014 alloy.

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Abstract

Aluminium 2014 alloy solutionized at 495°C, aged at 195°C was subjected to Equal Channel Angular Pressing (ECAP). Dry sliding wear tests were conducted using pin on disc tribometer system under nominal loads of 10N and 30N with constant speed 2m/s for 2000m in order to investigate their wear behavior after ECAP. The Co-efficient of friction and loss in volume were decreased after ECAP. The dominant wear mechanism observed was adhesion, delamination in addition to these wear mechanisms, oxidation and transfer of Fe from the counter surface to the Al 2014 pin were observed at higher loading condition. The corrosion behavior was evaluated by potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) in 3.5% NaCl solution. The results obtained from PDP showed higher corrosion potential and lower corrosion density after ECAP than base. Electrochemical impedance spectroscopy (EIS) showed higher charge transfer resistance after ECAP. Surface morphology showed decreased pit size and increased oxygen content in ECAP sample than base after PDP.

Item Type: Conference or Workshop Item (Paper)
Subjects: CHEMISTRY AND MATERIALS > Metals and Metallic Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 25 Jul 2019 11:32
Last Modified: 25 Jul 2019 11:33
URI: http://nal-ir.nal.res.in/id/eprint/13199

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