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Bending behavior of nickel-coated aluminum alloy 6156-T61

Published online by Cambridge University Press:  08 August 2018

C.N. Panagopoulos ,
K.I. Giannakopoulos  and
H.P. Kyriakopoulou
C.N. Panagopoulos
Affiliation:
Laboratory of Physical Metallurgy, National Technical University of Athens, Zografos, 15780, Athens, Greece
K.I. Giannakopoulos*
Affiliation:
Strength of Materials Laboratory, Piraeus University of Applied Sciences, 250 Thivon & P. Ralli Str. 12244 Egaleo—Athens, Greece
H.P. Kyriakopoulou
Affiliation:
Laboratory of Physical Metallurgy, National Technical University of Athens, Zografos, 15780, Athens, Greece
*
Address all correspondence to K.I. Giannakopoulos at [email protected]
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Abstract

This study constitutes an attempt to characterize the microscopic strain distribution during bending in the AI6156-T61 aged alloy and in the same aluminum alloy with nickel coating. Bendability was detected in both groups by load-displacement curves, at four different strain rates (0.5, 2, 5, and 10 mm/min). In the case of the bare aluminum alloy, the terminal bending angle (without fracture occurring) was 83°. It can be suggested that hemming effect, delamination, spallation, and falling back of the coating was evident in both regions. The surface morphology of the alloys under examination was studied using a scanning electron microscope connected to an energy-dispersive spectroscope.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 3 , September 2018 , pp. 1274 - 1278
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Copyright
Copyright © Materials Research Society 2018 

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