Temperature Induced Creep in Low-Alloy Structural Q345 Steel
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 6
Abstract
Significant levels of creep deformations in structural steel members exposed to high temperatures has been widely observed in experiments; however, inclusion of creep effects in numerical simulations has been limited due to lack of reliable experimental data and corresponding constitutive creep models for structural steel. This paper presents an experimental investigation into temperature-induced creep in low-alloy Q345 steel, which is commonly used in structural members. A set of creep tests is carried out at various stress levels in 300–900°C temperature range. Data from these creep tests indicate that temperature has significant influence on the level of creep deformations in Q345 steel, especially when the temperature in steel exceeds 400°C. The creep strain at a given temperature increases with stress level and the creep strain at a given stress level increases with temperature.
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Acknowledgments
The authors wish to acknowledge the support from the Fundamental Research Funds for the Central Universities (Grant No. CDJZR12200004 and 106112013CDJZR200006), the Natural Science Foundation of Chongqing (Grant No. cstc2013jcyjA30010), Funding Plan for Young Teachers at University of Chongqing, and Michigan State University. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsors.
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 6 • June 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Apr 29, 2015
Accepted: Oct 30, 2015
Published online: Jan 8, 2016
Published in print: Jun 1, 2016
Discussion open until: Jun 8, 2016
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