THERMAL SCIENCE

International Scientific Journal

Wei-Dong Song

,

Jian-Guo Ning

,

Xiao-Nan Mao

,

Jian-Qiao Li

A CONSTITUTIVE MODEL FOR PARTICULATE-REINFORCED TITANIUM MATRIX COMPOSITES SUBJECTED TO HIGH STRAIN RATES AND HIGH TEMPERATURES

ABSTRACT
Quasi-static and dynamic tension tests were conducted to study the mechanical properties of particulate-reinforced titanium matrix composites at strain rates ranging from 0.0001/s to 1000/s and at temperatures ranging from 20 °C to 650 °C Based on the experimental results, a constitutive model, which considers the effects of strain rate and temperature on hot deformation behavior, was proposed for particulate-reinforced titanium matrix composites subjected to high strain rates and high temperatures by using Zener-Hollomon equations including Arrhenius terms. All the material constants used in the model were identified by fitting Zener-Hollomon equations against the experimental results. By comparison of theoretical predictions presented by the model with experimental results, a good agreement was achieved, which indicates that this constitutive model can give an accurate and precise estimate for high temperature flow stress for the studied titanium matrix composites and can be used for numerical simulations of hot deformation behavior of the composites.
KEYWORDS
constitutive model, titanium matrix composite, high strain rate, high temperature, split Hopkinson tensile bar
PAPER SUBMITTED: 2013-02-22
PAPER REVISED: 2013-04-20
PAPER ACCEPTED: 2013-04-25
PUBLISHED ONLINE: 2013-12-28
DOI REFERENCE: https://doi.org/10.2298/TSCI1305361S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2013, VOLUME 17, ISSUE Issue 5, PAGES [1361 - 1367]
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A constitutive model for particulate-reinforced titanium matrix composites subjected to high strain rates and high temperatures

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence