On the occurrence of dynamic strain aging in C-103 Nb based alloy

In this study, the tensile properties of C-103 Nb based alloy were evaluated in the temperature range between room temperature (RT) and 1200°C using Gleeble test system at the strain rate of 10−2s−1. The presence of well-defined serrations and temperature insensitivity of 0.2% yield strength confirm...

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Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 620; pp. 286 - 292
Main Authors Panwar, S.S., Prasad, Kartik, Umasankar Patro, T., Balasubramanian, K., Venkataraman, B.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 03.01.2015
Subjects
C-103 alloy
Dynamic strain aging
Dynamical systems
Dynamics
Niobium
Niobium base alloys
Oxidation
Serrations
Strain rate
Tensile properties
Yield strength
C-103 alloy
Oxidation
Serrations
Niobium
Dynamic strain aging
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Summary:In this study, the tensile properties of C-103 Nb based alloy were evaluated in the temperature range between room temperature (RT) and 1200°C using Gleeble test system at the strain rate of 10−2s−1. The presence of well-defined serrations and temperature insensitivity of 0.2% yield strength confirmed the occurrence of dynamic strain aging (DSA) from RT to 1200°C. However, the DSA was found to have predominant effect only up to 900°C, beyond which dynamic recovery and oxidation influenced the tensile properties. Fractography revealed that the alloy had undergone intergranular fracture, which was attributed to the DSA in the temperature range of 600–900°C and oxidation in the temperature range of 1000–1200°C.
Bibliography:ObjectType-Article-1
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ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2014.10.016