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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/10795
Title: A Modified Theta Projection Model for Creep Behavior of Metals and Alloys
Authors: Kumar M.
Singh I.V.
Mishra B.K.
Ahmad S.
Venugopal Rao A.
Kumar V.
Published in: Journal of Materials Engineering and Performance
Abstract: In this work, a modified theta projection model is proposed for the constitutive modeling of creep behavior of metals and alloys. In the conventional theta projection model, strain hardening exponent is a function of time and theta, whereas in the modified theta projection model, the exponent is taken as a function of time, theta, and applied stress. The results obtained by the modified theta projection model for Al 2124 T851 alloy at constant uniaxial tensile stress are compared with the experimental results and with the predictions of the conventional theta projection method. The creep behavior of Al 7075 T651 alloy is also predicted using modified and conventional theta projection model and compared with the available experimental data. It is observed that the modified theta projection model captures the creep behavior more accurately as compared to the conventional theta projection model. The modified theta projection model can be used to predict the creep strain of pure metals and class M alloys (similar creep behavior to pure metals) for intermediate range of stress and temperature. © 2016, ASM International.
Citation: Journal of Materials Engineering and Performance (2016), 25(9): 3985-3992
URI: https://doi.org/10.1007/s11665-016-2197-y
http://repository.iitr.ac.in/handle/123456789/10795
Issue Date: 2016
Publisher: Springer New York LLC
Keywords: conventional theta projection model (CTPM)
creep
modified theta projection model (MTPM)
ISSN: 10599495
Author Scopus IDs: 57199856545
57204061377
55578538300
56640431400
6505934338
57200714018
Author Affiliations: Kumar, M., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
Singh, I.V., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
Mishra, B.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
Ahmad, S., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Venugopal Rao, A., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Kumar, V., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Corresponding Author: Singh, I.V.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeIndia; email: ivsingh@gmail.com
Appears in Collections:Journal Publications [ME]

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