Investigations on the void coalescence and corrosion behaviour of titanium grade 4 sheets during single point incremental forming process
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 20 August 2019
Issue publication date: 17 October 2019
Abstract
Purpose
The purpose of this paper is to investigate the void coalescence and corrosion behaviour of titanium Grade 4 sheets during single point incremental forming (SPIF) process with various spindle rotational speeds. The development of corrosion pits in 3.5 (%) NaCl solution has also been studied during SPIF process.
Design/methodology/approach
In this current research work, the void coalescence analysis and corrosion behaviour of titanium Grade 4 specimens were studied. A potentio-dynamic polarization (PDP) study was conducted to investigate the corrosion behaviour of titanium Grade 4 processed samples with various spindle speeds in 3.5 (%) NaCl solution. The scanning electron microscope and transmission electron microscope analysis was carried out to study the fracture behaviour and corrosion morphology of processed samples.
Findings
The titanium Grade 4 sheets obtained better formability and corrosion resistance by increasing the CNC spindle rotational speeds. In fact that, the significant plastic deformation affects the corrosion rate with various spindle speeds were recorded.
Originality/value
The spindle rotational speeds and vertical step depths increases then the titanium Grade 4 sheets showed better formability, void coalescence and corrosion behaviour as the same is evidenced in forming limit diagram and PDP curves.
Keywords
Citation
Yoganjaneyulu, G., Phaneendra, Y., Ravikumar, V.V. and Sathiya Narayanan, C. (2019), "Investigations on the void coalescence and corrosion behaviour of titanium grade 4 sheets during single point incremental forming process", Anti-Corrosion Methods and Materials, Vol. 66 No. 6, pp. 861-867. https://doi.org/10.1108/ACMM-01-2019-2074
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited