Constitutive Equations to Predict Stress-Strain Behaviour for a β Titanium Alloy at High Strain Rates Over a Wide Range of Temperatures

Hongyi Zhan; Gui Wang; Damon Kent; Matthew S Dargusch

doi:10.1002/9781119296126.ch261

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Constitutive Equations to Predict Stress-Strain Behaviour for a β Titanium Alloy at High Strain Rates Over a Wide Range of Temperatures

Conference paper

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Constitutive Equations to Predict Stress-Strain Behaviour for a β Titanium Alloy at High Strain Rates Over a Wide Range of Temperatures

Hongyi Zhan, Gui Wang, Damon Kent and Matthew S Dargusch

Proceedings of the 13th World Conference on Titanium, pp.1557-1564

World Conference on Titanium, 13th (San Diego, United States, 16-Aug-2015 - 20-Aug-2015)

John Wiley & Sons, Inc.

2016

DOI: https://doi.org/10.1002/9781119296126.ch261

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Abstract

Materials engineering

Expanding knowledge in engineering

titanium alloys

High strain rate deformation

Johnson-Cook model

Zerilli-Armstrong model

β titanium alloys

Stress-strain curves of the Ti-6Cr-5Mo-5V-4Al (Ti6554) alloy obtained from Split Hopkinson Pressure Bar (SHPB) tests over a wide range of temperatures (293-1173K) and strain rates (10 3-10 4 s-1) were employed to fit parameters for the Johnson-Cook(JC) and the Zerilli-Armstrong(ZA) models, respectively. The JC model is able to capture the stress-strain behaviour of the Ti6554 alloy better than the ZA model. However, the limit of the JC model is that it can only predict the flow behaviour accurately in a narrow domain near the strain value which is fixed in the parameters fitting. Also the format of the JC model is inadequate to track the complex strain-hardening behaviour of the Ti6554 alloy.

Details

Title: Constitutive Equations to Predict Stress-Strain Behaviour for a β Titanium Alloy at High Strain Rates Over a Wide Range of Temperatures
Authors: Hongyi Zhan (Author) - General Motors Global Research & Development (China)
Gui Wang (Author) - University of Queensland
Damon Kent (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Matthew S Dargusch (Author) - University of Queensland
Publication details: Proceedings of the 13th World Conference on Titanium, pp.1557-1564
Conference details: World Conference on Titanium, 13th (San Diego, United States, 16-Aug-2015 - 20-Aug-2015)
Publisher: John Wiley & Sons, Inc.
DOI: 10.1002/9781119296126.ch261; 10.1002/9781119296126
ISBN: 9781119296126
Organisation Unit: School of Science, Technology and Engineering; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99625940902621
Output Type: Conference paper

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